| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/3/2013 | BBG | Bard | Demoted to reserve roster | | | Before |
| 4/3/2013 | BBG | Frieri | Promoted to active roster | | | Before |
| 4/4/2013 | BRK | Tomlin | Demoted to reserve roster | | | Before |
| 4/4/2013 | BRK | Workman | Promoted to active roster | | | Before |
| 4/5/2013 | CEN | Chavez,Er | Demoted to reserve roster | | | Before |
| 4/5/2013 | CEN | Quintero | Promoted to active roster | | | Before |
| 4/6/2013 | CEN | Chavez,Er | Promoted to active roster | | | Before |
| 4/6/2013 | CEN | Quintero | Demoted to reserve roster | | | Before |
| 4/7/2013 | DLM | Rasmus,Cor | Promoted to active roster | | | Before |
| 4/7/2013 | DLM | Shoemaker | Demoted to reserve roster | | | Before |
| 4/10/2013 | NEP | Brantly | Promoted to active roster | | | Before |
| 4/10/2013 | NEP | Kelley | Demoted to reserve roster | | | Before |
| 4/11/2013 | CEN | Medlen | Placed on Injured List | | 4/11/2013 | Before |
| 4/11/2013 | CEN | Vargas | Promoted to active roster | | | Before |
| 4/11/2013 | CSS | Cain,L | Placed on Injured List | | 4/10/2013 | Before |
| 4/11/2013 | CSS | Kotsay | Promoted to active roster | | | Before |
| 4/11/2013 | NEP | Brantly | Demoted to reserve roster | | | Before |
| 4/11/2013 | NEP | Kelley | Promoted to active roster | | | Before |
| 4/13/2013 | BBG | Deduno | Promoted to active roster | | | Before |
| 4/13/2013 | BBG | Kendrick,K | Promoted to active roster | | | Before |
| 4/13/2013 | BBG | Ventura | Demoted to reserve roster | | | Before |
| 4/13/2013 | BBG | Weaver | Placed on Injured List | | 4/13/2013 | Before |
| 4/15/2013 | CEN | Santiago,H | Promoted to active roster | | | Before |
| 4/15/2013 | CEN | Vargas | Placed on Injured List | | 4/15/2013 | Before |
| 4/15/2013 | CSS | Konerko | Placed on Injured List | | 4/15/2013 | Before |
| 4/15/2013 | CSS | Mayberry | Promoted to active roster | | | Before |
| 4/15/2013 | NEP | Brantly | Promoted to active roster | | | Before |
| 4/15/2013 | NEP | Jaso | Placed on Injured List | | 4/15/2013 | Before |
| 4/16/2013 | BRK | Bernadina | Promoted to active roster | | | Before |
| 4/16/2013 | BRK | Torres,An | Placed on Injured List | | 4/16/2013 | Before |
| 4/16/2013 | CAR | Lind | Placed on Injured List | | 4/16/2013 | Before |
| 4/16/2013 | CAR | Schierholtz | Promoted to active roster | | | Before |
| 4/16/2013 | DLM | Lagares | Promoted to active roster | | | Before |
| 4/16/2013 | DLM | Smith,S | Placed on Injured List | | 4/16/2013 | Before |
| 4/16/2013 | HHR | Pillar | Promoted to active roster | | | Before |
| 4/16/2013 | HHR | Sweeney | Placed on Injured List | | 4/15/2013 | Before |
| 4/16/2013 | RMO | Cosart | Promoted to active roster | | | Before |
| 4/16/2013 | RMO | Gray | Placed on Injured List | | 4/16/2013 | Before |
| 4/17/2013 | BBG | Beckham,T | Demoted to reserve roster | | | Before |
| 4/17/2013 | BBG | Lombardozzi | Promoted to active roster | | | Before |
| 4/17/2013 | HHR | Lough | Promoted to active roster | | | Before |
| 4/17/2013 | HHR | Pillar | Demoted to reserve roster | | | Before |
| 4/17/2013 | SOI | Maldonado | Promoted to active roster | | | Before |
| 4/17/2013 | SOI | Zunino | Placed on Injured List | | 4/17/2013 | Before |
| 4/19/2013 | RMO | Nelson,J | Promoted to active roster | | | Before |
| 4/19/2013 | RMO | Peacock | Placed on Injured List | | 4/19/2013 | Before |
| 4/20/2013 | BRK | Betances | Demoted to reserve roster | | | Before |
| 4/20/2013 | CIN | Perez,O | Placed on Injured List | | 4/20/2013 | Before |
| 4/20/2013 | CIN | Storen | Promoted to active roster | | | Before |
| 4/20/2013 | CSS | Maybin | Demoted to reserve roster | | | Before |
| 4/21/2013 | BRK | LeBlanc | Promoted to active roster | | | Before |
| 4/21/2013 | NYD | Dyson,S | Demoted to reserve roster | | | Before |
| 4/21/2013 | NYD | Familia | Demoted to reserve roster | | | Before |
| 4/21/2013 | NYD | Humber | Promoted to active roster | | | Before |
| 4/21/2013 | NYD | Morton | Promoted to active roster | | | Before |
| 4/21/2013 | NYD | Moylan | Demoted to reserve roster | | | Before |
| 4/21/2013 | NYD | Worley | Promoted to active roster | | | Before |
| 4/21/2013 | TEW | Cuddyer | Placed on Injured List | | 4/21/2013 | Before |
| 4/21/2013 | TEW | Freiman | Promoted to active roster | | | Before |
| 4/24/2013 | CSS | Pacheco | Promoted to active roster | | | Before |
| 4/25/2013 | CSS | Cain,L | Activated from Injured List | | | Before |
| 4/25/2013 | CSS | Kotsay | Placed on Injured List | | 4/25/2013 | Before |
| 4/25/2013 | SOI | de la Rosa,J | Placed on Injured List | | 4/25/2013 | Before |
| 4/25/2013 | SOI | Warren | Promoted to active roster | | | Before |
| 4/26/2013 | CEN | Medlen | Activated from Injured List | | | Before |
| 4/26/2013 | CEN | Santiago,H | Demoted to reserve roster | | | Before |
| 4/26/2013 | NEP | Harang | Promoted to active roster | | | Before |
| 4/26/2013 | NEP | Hernandez,Ro | Promoted to active roster | | | Before |
| 4/26/2013 | NEP | Miley | Demoted to reserve roster | | | Before |
| 4/26/2013 | NEP | Ramirez,E | Demoted to reserve roster | | | Before |
| 4/27/2013 | CSS | Pacheco | Demoted to reserve roster | | | Before |
| 4/27/2013 | CSS | Young,D | Promoted to active roster | | | Before |
| 4/27/2013 | TEW | Doumit | Placed on Injured List | | 4/27/2013 | Before |
| 4/27/2013 | TEW | Teagarden | Promoted to active roster | | | Before |
| 4/28/2013 | CIN | Middlebrooks | Placed on Injured List | | 4/28/2013 | Before |
| 4/28/2013 | CIN | Young,M | Promoted to active roster | | | Before |
| 4/28/2013 | NYD | Hand,B | Demoted to reserve roster | | | Before |
| 4/28/2013 | NYD | Sanabia | Promoted to active roster | | | Before |
| 4/30/2013 | CSS | Bradley | Demoted to reserve roster | | | Before |
| 4/30/2013 | CSS | Konerko | Activated from Injured List | | | Before |
| 4/30/2013 | HAR | Roark | Placed on Injured List | | 4/30/2013 | Before |
| 4/30/2013 | HAR | Vincent | Promoted to active roster | | | Before |
| 4/30/2013 | NYD | Cloyd | Promoted to active roster | | | Before |
| 4/30/2013 | NYD | Sanchez,J | Demoted to reserve roster | | | Before |
| 5/1/2013 | CTW | Hudson | Promoted to active roster | | | Before |
| 5/1/2013 | CTW | Nova | Placed on Injured List | | 5/1/2013 | Before |
| 5/1/2013 | RMO | Gray | Activated from Injured List | | | Before |
| 5/1/2013 | RMO | Odorizzi | Demoted to reserve roster | | | Before |
| 5/2/2013 | CAR | Lind | Activated from Injured List | | | Before |
| 5/2/2013 | CAR | Ogando | Demoted to reserve roster | | | Before |
| 5/2/2013 | CAR | Schierholtz | Demoted to reserve roster | | | Before |
| 5/2/2013 | CAR | Thornburg | Promoted to active roster | | | Before |
| 5/2/2013 | CIO | Capuano | Promoted to active roster | | | Before |
| 5/2/2013 | CIO | Saunders,J | Demoted to reserve roster | | | Before |
| 5/2/2013 | HHR | Cabrera,As | Placed on Injured List | | 5/2/2013 | Before |
| 5/2/2013 | HHR | Shuck | Promoted to active roster | | | Before |
| 5/3/2013 | BAR | Crisp | Placed on Injured List | | 5/3/2013 | Before |
| 5/3/2013 | BAR | de Aza | Promoted to active roster | | | Before |
| 5/4/2013 | BRK | Jansen | Traded away | RMO | | After |
| 5/4/2013 | BRK | Kelly,J | Traded away | RMO | | After |
| 5/4/2013 | HAR | Wood,T | Traded away | RMO | | After |
| 5/4/2013 | NYD | Albers,M | Traded away | RMO | | After |
| 5/4/2013 | NYD | Phelps,D | Acquired via trade | RMO | | After |
| 5/4/2013 | RMO | Peacock | Activated from Injured List | | | Before |
| 5/4/2013 | RMO | Pomeranz | Demoted to reserve roster | | | Before |
| 5/4/2013 | RMO | Albers,M | Acquired via trade | NYD | | After |
| 5/4/2013 | RMO | Jansen | Acquired via trade | BRK | | After |
| 5/4/2013 | RMO | Kelly,J | Acquired via trade | BRK | | After |
| 5/4/2013 | RMO | Phelps,D | Traded away | NYD | | After |
| 5/4/2013 | RMO | Wood,T | Acquired via trade | HAR | | After |
| 5/5/2013 | BRK | Bernadina | Demoted to reserve roster | | | Before |
| 5/5/2013 | BRK | Hughes,J | Demoted to reserve roster | | | Before |
| 5/5/2013 | BRK | Parker,B | Promoted to active roster | | | Before |
| 5/5/2013 | BRK | Paxton | Promoted to active roster | | | Before |
| 5/5/2013 | BRK | Torres,An | Activated from Injured List | | | Before |
| 5/5/2013 | CEN | Pagan | Promoted to active roster | | | Before |
| 5/5/2013 | CEN | Teixeira | Demoted to reserve roster | | | Before |
| 5/5/2013 | CIN | Perez,O | Activated from Injured List | | | Before |
| 5/5/2013 | CIN | Storen | Demoted to reserve roster | | | Before |
| 5/5/2013 | NYD | Phelps,D | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Albers,M | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Albers,M | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Colome | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Cowgill | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Cowgill | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Espinosa | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Hamilton,B | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Hendriks | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Kelly,J | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Nelson,J | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Peacock | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Polanco | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Polanco | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Rodriguez,S | Demoted to reserve roster | | | Before |
| 5/5/2013 | RMO | Rodriguez,S | Promoted to active roster | | | Before |
| 5/5/2013 | RMO | Wood,T | Promoted to active roster | | | Before |
| 5/6/2013 | RMO | Martin,R | Placed on Injured List | | 5/6/2013 | Before |
| 5/6/2013 | RMO | Shoppach | Promoted to active roster | | | Before |
| 5/6/2013 | TEW | Hernandez,C | Demoted to reserve roster | | | Before |
| 5/6/2013 | TEW | Solano,D | Promoted to active roster | | | Before |
| 5/8/2013 | BAR | Coleman | Demoted to reserve roster | | | Before |
| 5/8/2013 | BAR | Gregerson | Promoted to active roster | | | Before |
| 5/8/2013 | GAR | Brach | Promoted to active roster | | | Before |
| 5/8/2013 | GAR | Duke | Demoted to reserve roster | | | Before |
| 5/8/2013 | GAR | Grandal | Demoted to reserve roster | | | Before |
| 5/8/2013 | GAR | McKenry | Promoted to active roster | | | Before |
| 5/9/2013 | HHR | Guthrie | Demoted to reserve roster | | | Before |
| 5/9/2013 | HHR | Hanigan | Promoted to active roster | | | Before |
| 5/10/2013 | DLM | Britton | Promoted to active roster | | | Before |
| 5/10/2013 | DLM | Bumgarner | Placed on Injured List | | 5/10/2013 | Before |
| 5/10/2013 | DLM | Duffy | Promoted to active roster | | | Before |
| 5/10/2013 | DLM | Scherzer | Placed on Injured List | | 5/7/2013 | Before |
| 5/10/2013 | NEP | Jackson,E | Demoted to reserve roster | | | Before |
| 5/10/2013 | NEP | Miley | Promoted to active roster | | | Before |
| 5/10/2013 | NYD | Cruz,L | Promoted to active roster | | | Before |
| 5/10/2013 | NYD | Gonzalez,Ale | Demoted to reserve roster | | | Before |
| 5/10/2013 | SOI | de la Rosa,J | Activated from Injured List | | | Before |
| 5/10/2013 | SOI | Warren | Demoted to reserve roster | | | Before |
| 5/11/2013 | CSS | Bauer | Promoted to active roster | | | Before |
| 5/11/2013 | CSS | Gausman | Demoted to reserve roster | | | Before |
| 5/12/2013 | BRK | Buck | Promoted to active roster | | | Before |
| 5/12/2013 | BRK | d'Arnaud | Demoted to reserve roster | | | Before |
| 5/12/2013 | CIO | Escobar,E | Demoted to reserve roster | | | Before |
| 5/12/2013 | CIO | Gordon,D | Promoted to active roster | | | Before |
| 5/12/2013 | TEW | Heyward | Placed on Injured List | | 5/12/2013 | Before |
| 5/12/2013 | TEW | Robinson,D | Promoted to active roster | | | Before |
| 5/13/2013 | BBG | Deduno | Demoted to reserve roster | | | Before |
| 5/13/2013 | BBG | Weaver | Activated from Injured List | | | Before |
| 5/13/2013 | CIN | Gomes,J | Demoted to reserve roster | | | Before |
| 5/13/2013 | CIN | Hernandez,Ra | Promoted to active roster | | | Before |
| 5/13/2013 | CIN | Middlebrooks | Activated from Injured List | | | Before |
| 5/13/2013 | CIN | Young,M | Demoted to reserve roster | | | Before |
| 5/13/2013 | CTW | Bogusevic | Demoted to reserve roster | | | Before |
| 5/13/2013 | CTW | Crawford,C | Promoted to active roster | | | Before |
| 5/13/2013 | HAR | Davis,K | Demoted to reserve roster | | | Before |
| 5/13/2013 | HAR | Pearce | Promoted to active roster | | | Before |
| 5/14/2013 | BRK | d'Arnaud | Promoted to active roster | | | Before |
| 5/14/2013 | BRK | Kennedy | Demoted to reserve roster | | | Before |
| 5/14/2013 | CIO | Capuano | Demoted to reserve roster | | | Before |
| 5/14/2013 | CIO | Delgado | Promoted to active roster | | | Before |
| 5/14/2013 | FDH | Carrasco | Promoted to active roster | | | Before |
| 5/14/2013 | FDH | Petit | Demoted to reserve roster | | | Before |
| 5/15/2013 | BRK | Dunn,M | Promoted to active roster | | | Before |
| 5/15/2013 | BRK | Torres,An | Demoted to reserve roster | | | Before |
| 5/15/2013 | NYD | Castellanos,N | Demoted to reserve roster | | | Before |
| 5/15/2013 | NYD | Kelly,D | Promoted to active roster | | | Before |
| 5/16/2013 | BBG | Barney | Placed on Injured List | | 5/15/2013 | Before |
| 5/16/2013 | BBG | Ruggiano | Promoted to active roster | | | Before |
| 5/16/2013 | CSS | Cain,L | Placed on Injured List | | 5/16/2013 | Before |
| 5/16/2013 | CSS | Grossman | Promoted to active roster | | | Before |
| 5/17/2013 | BRK | d'Arnaud | Demoted to reserve roster | | | Before |
| 5/17/2013 | BRK | Kennedy | Promoted to active roster | | | Before |
| 5/17/2013 | CTW | Hudson | Demoted to reserve roster | | | Before |
| 5/17/2013 | CTW | Nova | Activated from Injured List | | | Before |
| 5/17/2013 | DLM | Lagares | Demoted to reserve roster | | | Before |
| 5/17/2013 | DLM | Smith,S | Activated from Injured List | | | Before |
| 5/17/2013 | GAR | Calhoun | Demoted to reserve roster | | | Before |
| 5/17/2013 | GAR | Holt | Promoted to active roster | | | Before |
| 5/17/2013 | GAR | Nieuwenhuis | Promoted to active roster | | | Before |
| 5/17/2013 | GAR | Turner,Ju | Demoted to reserve roster | | | Before |
| 5/17/2013 | SOI | Maldonado | Demoted to reserve roster | | | Before |
| 5/17/2013 | SOI | Zunino | Activated from Injured List | | | Before |
| 5/19/2013 | CIN | Freeman,F | Placed on Injured List | | 5/19/2013 | Before |
| 5/19/2013 | CIN | Loney | Promoted to active roster | | | Before |
| 5/19/2013 | CIO | Blazek | Demoted to reserve roster | | | Before |
| 5/19/2013 | CIO | Marquis | Promoted to active roster | | | Before |
| 5/19/2013 | HAR | Gentry | Promoted to active roster | | | Before |
| 5/19/2013 | HAR | Kluber | Placed on Injured List | | 5/19/2013 | Before |
| 5/19/2013 | HAR | Roark | Activated from Injured List | | | Before |
| 5/19/2013 | HAR | Victorino | Placed on Injured List | | 5/16/2013 | Before |
| 5/19/2013 | HAR | Vincent | Demoted to reserve roster | | | Before |
| 5/19/2013 | HAR | Vincent | Promoted to active roster | | | Before |
| 5/19/2013 | NEP | Alvarez,J | Demoted to reserve roster | | | Before |
| 5/19/2013 | NEP | Wilson,A | Promoted to active roster | | | Before |
| 5/20/2013 | CIN | Cueto | Demoted to reserve roster | | | Before |
| 5/20/2013 | CIN | Salazar | Promoted to active roster | | | Before |
| 5/21/2013 | BRK | Diamond | Promoted to active roster | | | Before |
| 5/21/2013 | BRK | Paxton | Demoted to reserve roster | | | Before |
| 5/21/2013 | CIN | Grilli | Demoted to reserve roster | | | Before |
| 5/21/2013 | CIN | Wilhelmsen | Promoted to active roster | | | Before |
| 5/21/2013 | NEP | Brantly | Demoted to reserve roster | | | Before |
| 5/21/2013 | NEP | Jaso | Activated from Injured List | | | Before |
| 5/21/2013 | RMO | Martin,R | Activated from Injured List | | | Before |
| 5/21/2013 | RMO | Rodriguez,S | Promoted to active roster | | | Before |
| 5/21/2013 | RMO | Shoppach | Demoted to reserve roster | | | Before |
| 5/21/2013 | RMO | Stanton | Placed on Injured List | | 5/21/2013 | Before |
| 5/21/2013 | SOI | Maldonado | Promoted to active roster | | | Before |
| 5/21/2013 | SOI | Zunino | Placed on Injured List | | 5/21/2013 | Before |
| 5/22/2013 | BAR | Crisp | Activated from Injured List | | | Before |
| 5/22/2013 | BAR | de Aza | Demoted to reserve roster | | | Before |
| 5/22/2013 | CEN | Oberholtzer | Demoted to reserve roster | | | Before |
| 5/22/2013 | CEN | Vargas | Activated from Injured List | | | Before |
| 5/22/2013 | DLM | Duffy | Demoted to reserve roster | | | Before |
| 5/22/2013 | DLM | Scherzer | Activated from Injured List | | | Before |
| 5/22/2013 | NYD | Nunez | Placed on Injured List | | 5/22/2013 | Before |
| 5/24/2013 | CSS | Bauer | Demoted to reserve roster | | | Before |
| 5/24/2013 | CSS | Braun | Demoted to reserve roster | | | Before |
| 5/24/2013 | CSS | Gonzalez,MAng | Promoted to active roster | | | Before |
| 5/24/2013 | CSS | Murphy,Dav | Promoted to active roster | | | Before |
| 5/24/2013 | NYD | Hundley | Placed on Injured List | | 5/23/2013 | Before |
| 5/24/2013 | NYD | Pena,R | Promoted to active roster | | | Before |
| 5/24/2013 | NYD | Romine,Au | Promoted to active roster | | | Before |
| 5/25/2013 | CIN | Miller,A | Demoted to reserve roster | | | Before |
| 5/25/2013 | CIN | Storen | Promoted to active roster | | | Before |
| 5/25/2013 | TEW | Archer | Demoted to reserve roster | | | Before |
| 5/25/2013 | TEW | Cuddyer | Activated from Injured List | | | Before |
| 5/25/2013 | TEW | Doumit | Activated from Injured List | | | Before |
| 5/25/2013 | TEW | Freiman | Demoted to reserve roster | | | Before |
| 5/25/2013 | TEW | Roberts,B | Promoted to active roster | | | Before |
| 5/25/2013 | TEW | Stauffer | Demoted to reserve roster | | | Before |
| 5/25/2013 | TEW | Teagarden | Demoted to reserve roster | | | Before |
| 5/25/2013 | TEW | Wheeler,Z | Promoted to active roster | | | Before |
| 5/26/2013 | BRK | Villanueva | Promoted to active roster | | | Before |
| 5/26/2013 | BRK | Workman | Demoted to reserve roster | | | Before |
| 5/26/2013 | CAR | Brothers | Demoted to reserve roster | | | Before |
| 5/26/2013 | CAR | Reed,A | Promoted to active roster | | | Before |
| 5/26/2013 | CAR | Wright,W | Promoted to active roster | | | Before |
| 5/26/2013 | CAR | Ziegler | Demoted to reserve roster | | | Before |
| 5/26/2013 | CTW | Benoit | Promoted to active roster | | | Before |
| 5/26/2013 | CTW | Hochevar | Promoted to active roster | | | Before |
| 5/26/2013 | CTW | Kimbrel | Demoted to reserve roster | | | Before |
| 5/26/2013 | CTW | Qualls | Demoted to reserve roster | | | Before |
| 5/26/2013 | GAR | Broxton | Demoted to reserve roster | | | Before |
| 5/26/2013 | GAR | Fiers | Promoted to active roster | | | Before |
| 5/27/2013 | HAR | Baker,Je | Promoted to active roster | | | Before |
| 5/27/2013 | HAR | Chacin | Placed on Injured List | | 5/26/2013 | Before |
| 5/27/2013 | HAR | De La Rosa | Promoted to active roster | | | Before |
| 5/27/2013 | HAR | Harrison,J | Demoted to reserve roster | | | Before |
| 5/27/2013 | HAR | Roark | Activated from Injured List | | | Before |
| 5/27/2013 | NEP | Morales,F | Promoted to active roster | | | Before |
| 5/27/2013 | NEP | Rondon,H | Placed on Injured List | | 5/21/2013 | Before |
| 5/28/2013 | DLM | Bumgarner | Activated from Injured List | | | Before |
| 5/28/2013 | DLM | Rasmus,Cor | Demoted to reserve roster | | | Before |
| 5/28/2013 | NEP | Jackson,E | Promoted to active roster | | | Before |
| 5/28/2013 | NEP | Kelley | Demoted to reserve roster | | | Before |
| 5/29/2013 | FDH | Cain,M | Promoted to active roster | | | Before |
| 5/29/2013 | FDH | Carrasco | Demoted to reserve roster | | | Before |
| 5/30/2013 | CIO | Manship | Promoted to active roster | | | Before |
| 5/30/2013 | CIO | Martinez,Ca | Demoted to reserve roster | | | Before |
| 5/30/2013 | CSS | Maurer | Promoted to active roster | | | Before |
| 5/30/2013 | CSS | Mayberry | Demoted to reserve roster | | | Before |
| 5/30/2013 | CSS | Pacheco | Promoted to active roster | | | Before |
| 5/30/2013 | CSS | Soria | Demoted to reserve roster | | | Before |
| 5/30/2013 | RMO | Encarnacion | Placed on Injured List | | 5/30/2013 | Before |
| 5/30/2013 | RMO | Quintanilla | Promoted to active roster | | | Before |
| 5/30/2013 | SOI | Avila | Placed on Injured List | | 5/30/2013 | Before |
| 5/30/2013 | SOI | Montero,J | Promoted to active roster | | | Before |
| 5/31/2013 | BBG | Barney | Activated from Injured List | | | Before |
| 5/31/2013 | BBG | Butler,B | Demoted to reserve roster | | | Before |
| 5/31/2013 | BBG | Lobaton | Promoted to active roster | | | Before |
| 5/31/2013 | BBG | Rivera,R | Demoted to reserve roster | | | Before |
| 5/31/2013 | CAR | Norris,B | Promoted to active roster | | | Before |
| 5/31/2013 | CAR | Thornburg | Demoted to reserve roster | | | Before |
| 5/31/2013 | CSS | Cain,L | Activated from Injured List | | | Before |
| 5/31/2013 | CSS | Pacheco | Demoted to reserve roster | | | Before |
| 6/1/2013 | FDH | Boxberger | Demoted to reserve roster | | | Before |
| 6/1/2013 | FDH | McHugh | Promoted to active roster | | | Before |
| 6/2/2013 | CAR | Florimon | Promoted to active roster | | | Before |
| 6/2/2013 | CAR | Infante | Placed on Injured List | | 6/2/2013 | Before |
| 6/2/2013 | GAR | Amarista | Promoted to active roster | | | Before |
| 6/2/2013 | GAR | Marte,S | Placed on Injured List | | 5/31/2013 | Before |
| 6/2/2013 | NYD | Axelrod | Promoted to active roster | | | Before |
| 6/2/2013 | NYD | Smith,W | Demoted to reserve roster | | | Before |
| 6/3/2013 | CIN | Freeman,F | Activated from Injured List | | | Before |
| 6/3/2013 | CIN | Hernandez,Ra | Demoted to reserve roster | | | Before |
| 6/3/2013 | FDH | Carrasco | Promoted to active roster | | | Before |
| 6/3/2013 | FDH | Cashner | Placed on Injured List | | 6/3/2013 | Before |
| 6/3/2013 | GAR | Arrieta | Demoted to reserve roster | | | Before |
| 6/3/2013 | GAR | Cecil | Promoted to active roster | | | Before |
| 6/3/2013 | GAR | Gonzalez,Ma | Demoted to reserve roster | | | Before |
| 6/3/2013 | GAR | Johnson,Ke | Promoted to active roster | | | Before |
| 6/3/2013 | GAR | Neshek | Demoted to reserve roster | | | Before |
| 6/3/2013 | GAR | Wood,A | Promoted to active roster | | | Before |
| 6/3/2013 | HAR | Farquhar | Promoted to active roster | | | Before |
| 6/3/2013 | HAR | Lee,Cl | Placed on Injured List | | 6/3/2013 | Before |
| 6/4/2013 | BRK | Bernadina | Promoted to active roster | | | Before |
| 6/4/2013 | BRK | Young,C | Placed on Injured List | | 6/4/2013 | Before |
| 6/5/2013 | BAR | Alvarez,H | Promoted to active roster | | | Before |
| 6/5/2013 | BAR | Scheppers | Demoted to reserve roster | | | Before |
| 6/5/2013 | FDH | Headley | Placed on Injured List | | 6/5/2013 | Before |
| 6/5/2013 | SOI | Montero,J | Demoted to reserve roster | | | Before |
| 6/5/2013 | SOI | Zunino | Activated from Injured List | | | Before |
| 6/6/2013 | CIO | Gordon,D | Demoted to reserve roster | | | Before |
| 6/6/2013 | CIO | Ryan | Promoted to active roster | | | Before |
| 6/6/2013 | CSS | Hairston,J | Promoted to active roster | | | Before |
| 6/6/2013 | CSS | Segura | Placed on Injured List | | 6/6/2013 | Before |
| 6/6/2013 | FDH | Sanchez,G | Promoted to active roster | | | Before |
| 6/8/2013 | CSS | Forsythe | Demoted to reserve roster | | | Before |
| 6/8/2013 | CSS | Marisnick | Promoted to active roster | | | Before |
| 6/8/2013 | HAR | Gentry | Demoted to reserve roster | | | Before |
| 6/8/2013 | HAR | Victorino | Promoted to active roster | | | Before |
| 6/9/2013 | GAR | Holt | Demoted to reserve roster | | | Before |
| 6/9/2013 | GAR | Kottaras | Promoted to active roster | | | Before |
| 6/9/2013 | HAR | Kluber | Promoted to active roster | | | Before |
| 6/9/2013 | HAR | Roark | Demoted to reserve roster | | | Before |
| 6/10/2013 | BBG | Frieri | Demoted to reserve roster | | | Before |
| 6/10/2013 | BBG | Smith,J | Acquired via trade | CSS | | After |
| 6/10/2013 | BRK | Hicks | Demoted to reserve roster | | | Before |
| 6/10/2013 | BRK | Izturis,C | Promoted to active roster | | | Before |
| 6/10/2013 | CSS | Smith,J | Traded away | BBG | | After |
| 6/11/2013 | CSS | Jeffress | Promoted to active roster | | | Before |
| 6/11/2013 | NYD | Hernandez,P | Promoted to active roster | | | Before |
| 6/11/2013 | NYD | Humber | Placed on Injured List | | 6/11/2013 | Before |
| 6/12/2013 | RMO | Garcia,A | Demoted to reserve roster | | | Before |
| 6/12/2013 | RMO | Stanton | Activated from Injured List | | | Before |
| 6/13/2013 | CAR | Castillo | Promoted to active roster | | | Before |
| 6/13/2013 | CAR | Gattis | Demoted to reserve roster | | | Before |
| 6/13/2013 | CAR | Lind | Demoted to reserve roster | | | Before |
| 6/13/2013 | CAR | Schierholtz | Promoted to active roster | | | Before |
| 6/13/2013 | GAR | Davis,I | Promoted to active roster | | | Before |
| 6/13/2013 | GAR | Nieuwenhuis | Demoted to reserve roster | | | Before |
| 6/14/2013 | BRK | Rusin | Demoted to reserve roster | | | Before |
| 6/14/2013 | BRK | Varvaro | Promoted to active roster | | | Before |
| 6/14/2013 | CEN | Fien | Promoted to active roster | | | Before |
| 6/14/2013 | CEN | Putz | Demoted to reserve roster | | | Before |
| 6/14/2013 | RMO | Encarnacion | Activated from Injured List | | | Before |
| 6/14/2013 | RMO | Morrison | Demoted to reserve roster | | | Before |
| 6/14/2013 | SOI | Avila | Activated from Injured List | | | Before |
| 6/14/2013 | SOI | Maldonado | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Blanks | Promoted to active roster | | | Before |
| 6/17/2013 | CTW | Buchholz | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Gennett | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Hudson | Promoted to active roster | | | Before |
| 6/17/2013 | CTW | Loup | Promoted to active roster | | | Before |
| 6/17/2013 | CTW | Parnell | Promoted to active roster | | | Before |
| 6/17/2013 | CTW | Rivera,M | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Saltalamacchia | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Siegrist | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Swarzak | Promoted to active roster | | | Before |
| 6/17/2013 | CTW | Thielbar | Demoted to reserve roster | | | Before |
| 6/17/2013 | CTW | Thielbar | Promoted to active roster | | | Before |
| 6/17/2013 | NEP | Lopez,J | Demoted to reserve roster | | | Before |
| 6/17/2013 | NEP | Salas | Promoted to active roster | | | Before |
| 6/17/2013 | NYD | Blackmon | Demoted to reserve roster | | | Before |
| 6/17/2013 | NYD | Rosales | Promoted to active roster | | | Before |
| 6/17/2013 | SOI | Downs,S | Promoted to active roster | | | Before |
| 6/17/2013 | SOI | Luetge | Demoted to reserve roster | | | Before |
| 6/18/2013 | HAR | Chacin | Promoted to active roster | | | Before |
| 6/18/2013 | HAR | Farquhar | Demoted to reserve roster | | | Before |
| 6/18/2013 | HAR | Harris,W | Demoted to reserve roster | | | Before |
| 6/18/2013 | HAR | Lee,Cl | Activated from Injured List | | | Before |
| 6/19/2013 | CIO | Delgado | Demoted to reserve roster | | | Before |
| 6/19/2013 | CIO | Saunders,J | Promoted to active roster | | | Before |
| 6/19/2013 | FDH | Cain,M | Demoted to reserve roster | | | Before |
| 6/19/2013 | FDH | Cashner | Activated from Injured List | | | Before |
| 6/19/2013 | GAR | Arencibia | Promoted to active roster | | | Before |
| 6/19/2013 | GAR | Martinez,JD | Demoted to reserve roster | | | Before |
| 6/19/2013 | NEP | Fields | Demoted to reserve roster | | | Before |
| 6/19/2013 | NEP | Rondon,H | Activated from Injured List | | | Before |
| 6/19/2013 | SOI | Maldonado | Promoted to active roster | | | Before |
| 6/19/2013 | SOI | Zunino | Placed on Injured List | | 6/19/2013 | Before |
| 6/20/2013 | CAR | Florimon | Demoted to reserve roster | | | Before |
| 6/20/2013 | CAR | Infante | Activated from Injured List | | | Before |
| 6/20/2013 | GAR | Koehler | Promoted to active roster | | | Before |
| 6/20/2013 | GAR | Ross,T | Demoted to reserve roster | | | Before |
| 6/20/2013 | HAR | Howell | Promoted to active roster | | | Before |
| 6/20/2013 | HAR | Lee,Cl | Activated from Injured List | | | Before |
| 6/20/2013 | HAR | Torres,Al | Demoted to reserve roster | | | Before |
| 6/20/2013 | RMO | Hamilton,B | Demoted to reserve roster | | | Before |
| 6/20/2013 | RMO | Morrison | Promoted to active roster | | | Before |
| 6/20/2013 | RMO | Quintanilla | Demoted to reserve roster | | | Before |
| 6/20/2013 | RMO | Shoppach | Promoted to active roster | | | Before |
| 6/21/2013 | BBG | Frieri | Promoted to active roster | | | Before |
| 6/21/2013 | BBG | Gorzelanny | Promoted to active roster | | | Before |
| 6/21/2013 | BBG | Henderson | Demoted to reserve roster | | | Before |
| 6/21/2013 | BBG | Papelbon | Demoted to reserve roster | | | Before |
| 6/21/2013 | BRK | Bernadina | Placed on Injured List | | 6/21/2013 | Before |
| 6/21/2013 | BRK | Ozuna | Demoted to reserve roster | | | Before |
| 6/21/2013 | BRK | Torres,An | Promoted to active roster | | | Before |
| 6/21/2013 | BRK | Young,C | Activated from Injured List | | | Before |
| 6/21/2013 | SOI | Beckett | Promoted to active roster | | | Before |
| 6/21/2013 | SOI | Cole | Demoted to reserve roster | | | Before |
| 6/22/2013 | CSS | Schumaker | Demoted to reserve roster | | | Before |
| 6/22/2013 | CSS | Segura | Activated from Injured List | | | Before |
| 6/22/2013 | CTW | Belt | Placed on Injured List | | 6/22/2013 | Before |
| 6/22/2013 | CTW | Pinto | Promoted to active roster | | | Before |
| 6/22/2013 | NEP | Colabello | Demoted to reserve roster | | | Before |
| 6/22/2013 | NEP | den Dekker | Promoted to active roster | | | Before |
| 6/23/2013 | CAR | Garcia,J | Demoted to reserve roster | | | Before |
| 6/23/2013 | CAR | Ziegler | Promoted to active roster | | | Before |
| 6/23/2013 | CSS | Hairston,J | Demoted to reserve roster | | | Before |
| 6/23/2013 | CSS | Pacheco | Promoted to active roster | | | Before |
| 6/24/2013 | GAR | Affeldt | Promoted to active roster | | | Before |
| 6/24/2013 | GAR | Chen,B | Promoted to active roster | | | Before |
| 6/24/2013 | GAR | Fiers | Demoted to reserve roster | | | Before |
| 6/24/2013 | GAR | Sipp | Demoted to reserve roster | | | Before |
| 6/25/2013 | DLM | Britton | Demoted to reserve roster | | | Before |
| 6/25/2013 | DLM | De Fratus | Demoted to reserve roster | | | Before |
| 6/25/2013 | DLM | Frasor | Promoted to active roster | | | Before |
| 6/25/2013 | DLM | Jepsen | Promoted to active roster | | | Before |
| 6/26/2013 | BRK | Rendon | Demoted to reserve roster | | | Before |
| 6/26/2013 | BRK | Tolleson | Promoted to active roster | | | Before |
| 6/26/2013 | FDH | Headley | Activated from Injured List | | | Before |
| 6/26/2013 | FDH | Sanchez,G | Demoted to reserve roster | | | Before |
| 6/27/2013 | BAR | Cobb | Demoted to reserve roster | | | Before |
| 6/27/2013 | BAR | Happ | Demoted to reserve roster | | | Before |
| 6/27/2013 | BAR | Mikolas | Promoted to active roster | | | Before |
| 6/27/2013 | BAR | Wacha | Promoted to active roster | | | Before |
| 6/27/2013 | BBG | Barney | Placed on Injured List | | 6/25/2013 | Before |
| 6/27/2013 | BBG | Butler,B | Promoted to active roster | | | Before |
| 6/27/2013 | BRK | Johnson,Jo | Promoted to active roster | | | Before |
| 6/27/2013 | BRK | Tolleson | Demoted to reserve roster | | | Before |
| 6/27/2013 | FDH | Butler,K | Acquired via trade | TEW | | After |
| 6/27/2013 | FDH | Rosario,S | Acquired via trade | TEW | | After |
| 6/27/2013 | FDH | Wilson,B | Acquired via trade | TEW | | After |
| 6/27/2013 | GAR | Kottaras | Demoted to reserve roster | | | Before |
| 6/27/2013 | GAR | Marte,S | Activated from Injured List | | | Before |
| 6/27/2013 | NEP | Dietrich | Demoted to reserve roster | | | Before |
| 6/27/2013 | NEP | Schoop | Promoted to active roster | | | Before |
| 6/27/2013 | TEW | Butler,K | Traded away | FDH | | After |
| 6/27/2013 | TEW | Rosario,S | Traded away | FDH | | After |
| 6/27/2013 | TEW | Wilson,B | Traded away | FDH | | After |
| 6/28/2013 | BBG | Ankiel | Promoted to active roster | | | Before |
| 6/28/2013 | BBG | Kemp | Placed on Injured List | | 6/26/2013 | Before |
| 6/28/2013 | CAR | Brothers | Promoted to active roster | | | Before |
| 6/28/2013 | CAR | Wright,W | Demoted to reserve roster | | | Before |
| 6/28/2013 | CEN | Chirinos | Promoted to active roster | | | Before |
| 6/28/2013 | CEN | Pena,B | Placed on Injured List | | 6/27/2013 | Before |
| 6/28/2013 | CIN | Pettitte | Promoted to active roster | | | Before |
| 6/28/2013 | CIN | Salazar | Demoted to reserve roster | | | Before |
| 6/28/2013 | CTW | Medina | Promoted to active roster | | | Before |
| 6/28/2013 | CTW | Swarzak | Placed on Injured List | | 6/28/2013 | Before |
| 6/28/2013 | HHR | Cabrera,As | Activated from Injured List | | | Before |
| 6/28/2013 | HHR | Lough | Demoted to reserve roster | | | Before |
| 6/28/2013 | HHR | Pillar | Promoted to active roster | | | Before |
| 6/28/2013 | HHR | Shuck | Demoted to reserve roster | | | Before |
| 6/28/2013 | NYD | Diekman | Demoted to reserve roster | | | Before |
| 6/28/2013 | NYD | Gearrin | Promoted to active roster | | | Before |
| 6/28/2013 | SOI | Bass | Promoted to active roster | | | Before |
| 6/28/2013 | SOI | Pressly | Demoted to reserve roster | | | Before |
| 6/28/2013 | TEW | Heyward | Activated from Injured List | | | Before |
| 6/28/2013 | TEW | Robinson,D | Demoted to reserve roster | | | Before |
| 6/28/2013 | TEW | Sanchez,T | Promoted to active roster | | | Before |
| 6/28/2013 | TEW | Vogt | Demoted to reserve roster | | | Before |
| 7/2/2013 | BAR | Frandsen | Promoted to active roster | | | Before |
| 7/2/2013 | BAR | Tulowitzki | Demoted to reserve roster | | | Before |
| 7/2/2013 | BAR | Walden | Promoted to active roster | | | Before |
| 7/2/2013 | BAR | Watson | Demoted to reserve roster | | | Before |
| 7/2/2013 | CIN | Grilli | Promoted to active roster | | | Before |
| 7/2/2013 | CIN | Loney | Demoted to reserve roster | | | Before |
| 7/2/2013 | CIN | Miller,A | Promoted to active roster | | | Before |
| 7/2/2013 | CIN | Owings | Promoted to active roster | | | Before |
| 7/2/2013 | CIN | Storen | Demoted to reserve roster | | | Before |
| 7/2/2013 | CIN | Wilhelmsen | Demoted to reserve roster | | | Before |
| 7/2/2013 | DLM | Bogaerts | Promoted to active roster | | | Before |
| 7/2/2013 | DLM | Edgin | Promoted to active roster | | | Before |
| 7/2/2013 | DLM | O'Day | Demoted to reserve roster | | | Before |
| 7/2/2013 | DLM | Uribe | Demoted to reserve roster | | | Before |
| 7/2/2013 | NEP | Kelley | Promoted to active roster | | | Before |
| 7/2/2013 | NEP | Russell | Demoted to reserve roster | | | Before |
| 7/2/2013 | NYD | Cruz,L | Demoted to reserve roster | | | Before |
| 7/2/2013 | NYD | Paredes | Promoted to active roster | | | Before |
| 7/3/2013 | BAR | Hawkins | Promoted to active roster | | | Before |
| 7/3/2013 | BAR | Mikolas | Demoted to reserve roster | | | Before |
| 7/4/2013 | BRK | Dickerson,Co | Demoted to reserve roster | | | Before |
| 7/4/2013 | BRK | Wells,V | Promoted to active roster | | | Before |
| 7/4/2013 | CIO | Capps | Demoted to reserve roster | | | Before |
| 7/4/2013 | CIO | Danks,Joh | Promoted to active roster | | | Before |
| 7/4/2013 | CIO | Murphy,JR | Demoted to reserve roster | | | Before |
| 7/4/2013 | CIO | Parmelee | Promoted to active roster | | | Before |
| 7/4/2013 | CIO | Raburn | Demoted to reserve roster | | | Before |
| 7/4/2013 | CIO | Rupp | Promoted to active roster | | | Before |
| 7/4/2013 | CSS | Hairston,J | Promoted to active roster | | | Before |
| 7/4/2013 | CSS | Mendoza | Promoted to active roster | | | Before |
| 7/4/2013 | CSS | Ramirez,Ar | Demoted to reserve roster | | | Before |
| 7/4/2013 | CSS | Thornton | Demoted to reserve roster | | | Before |
| 7/4/2013 | NEP | Almonte,A | Promoted to active roster | | | Before |
| 7/4/2013 | NEP | Gosselin | Promoted to active roster | | | Before |
| 7/4/2013 | NEP | Reimold | Demoted to reserve roster | | | Before |
| 7/4/2013 | NEP | Schoop | Demoted to reserve roster | | | Before |
| 7/4/2013 | SOI | Maldonado | Demoted to reserve roster | | | Before |
| 7/4/2013 | SOI | Zunino | Activated from Injured List | | | Before |
| 7/5/2013 | CTW | Pinto | Placed on Injured List | | 7/5/2013 | Before |
| 7/5/2013 | CTW | Saltalamacchia | Promoted to active roster | | | Before |
| 7/5/2013 | GAR | Arroyo | Promoted to active roster | | | Before |
| 7/5/2013 | GAR | Brach | Demoted to reserve roster | | | Before |
| 7/5/2013 | GAR | Neshek | Promoted to active roster | | | Before |
| 7/5/2013 | GAR | Richards | Placed on Injured List | | 7/5/2013 | Before |
| 7/5/2013 | NEP | Ramirez,E | Promoted to active roster | | | Before |
| 7/5/2013 | NEP | Wilson,A | Demoted to reserve roster | | | Before |
| 7/5/2013 | NYD | Hundley | Activated from Injured List | | | Before |
| 7/5/2013 | NYD | Mesoraco | Demoted to reserve roster | | | Before |
| 7/6/2013 | BRK | Bernadina | Activated from Injured List | | | Before |
| 7/6/2013 | BRK | Johnson,Jo | Demoted to reserve roster | | | Before |
| 7/6/2013 | NEP | Gosselin | Demoted to reserve roster | | | Before |
| 7/6/2013 | NEP | Weeks,J | Promoted to active roster | | | Before |
| 7/6/2013 | RMO | Gray | Demoted to reserve roster | | | Before |
| 7/7/2013 | BBG | Atchison | Demoted to reserve roster | | | Before |
| 7/7/2013 | BBG | Bedard | Promoted to active roster | | | Before |
| 7/7/2013 | BBG | Hafner | Promoted to active roster | | | Before |
| 7/7/2013 | BBG | Pujols | Placed on Injured List | | 7/7/2013 | Before |
| 7/7/2013 | CAR | Norris,B | Placed on Injured List | | 7/7/2013 | Before |
| 7/7/2013 | CAR | Ogando | Promoted to active roster | | | Before |
| 7/7/2013 | CTW | Belt | Activated from Injured List | | | Before |
| 7/7/2013 | CTW | Hale | Promoted to active roster | | | Before |
| 7/7/2013 | CTW | Hudson | Placed on Injured List | | 7/6/2013 | Before |
| 7/7/2013 | CTW | Wieters | Demoted to reserve roster | | | Before |
| 7/7/2013 | GAR | Broxton | Promoted to active roster | | | Before |
| 7/7/2013 | GAR | Calhoun | Promoted to active roster | | | Before |
| 7/7/2013 | GAR | Marte,S | Placed on Injured List | | 7/7/2013 | Before |
| 7/7/2013 | GAR | Neshek | Demoted to reserve roster | | | Before |
| 7/8/2013 | BAR | Abad | Demoted to reserve roster | | | Before |
| 7/8/2013 | BAR | Otero | Promoted to active roster | | | Before |
| 7/8/2013 | CIN | LeCure | Demoted to reserve roster | | | Before |
| 7/8/2013 | CIN | Storen | Promoted to active roster | | | Before |
| 7/8/2013 | FDH | Cain,M | Promoted to active roster | | | Before |
| 7/8/2013 | FDH | Carrasco | Demoted to reserve roster | | | Before |
| 7/8/2013 | FDH | McHugh | Demoted to reserve roster | | | Before |
| 7/8/2013 | FDH | Rosario,S | Promoted to active roster | | | Before |
| 7/9/2013 | BRK | Bettis | Promoted to active roster | | | Before |
| 7/9/2013 | BRK | LeBlanc | Demoted to reserve roster | | | Before |
| 7/9/2013 | BRK | Santiago,H | Promoted to active roster | | | Before |
| 7/9/2013 | BRK | Skaggs | Promoted to active roster | | | Before |
| 7/9/2013 | BRK | Bernier | Acquired via trade | CEN | | After |
| 7/9/2013 | BRK | Bettis | Acquired via trade | CEN | | After |
| 7/9/2013 | BRK | Bourn | Acquired via trade | CEN | | After |
| 7/9/2013 | BRK | Dunn,M | Traded away | CEN | | After |
| 7/9/2013 | BRK | Santiago,H | Acquired via trade | CEN | | After |
| 7/9/2013 | BRK | Varvaro | Traded away | CEN | | After |
| 7/9/2013 | CEN | Dunn,M | Demoted to reserve roster | | | Before |
| 7/9/2013 | CEN | Varvaro | Demoted to reserve roster | | | Before |
| 7/9/2013 | CEN | Bernier | Traded away | BRK | | After |
| 7/9/2013 | CEN | Bettis | Traded away | BRK | | After |
| 7/9/2013 | CEN | Bourn | Traded away | BRK | | After |
| 7/9/2013 | CEN | Dunn,M | Acquired via trade | BRK | | After |
| 7/9/2013 | CEN | Santiago,H | Traded away | BRK | | After |
| 7/9/2013 | CEN | Varvaro | Acquired via trade | BRK | | After |
| 7/9/2013 | NEP | Belisario | Promoted to active roster | | | Before |
| 7/9/2013 | NEP | Morales,F | Demoted to reserve roster | | | Before |
| 7/9/2013 | TEW | Archer | Promoted to active roster | | | Before |
| 7/9/2013 | TEW | Lincecum | Placed on Injured List | | 7/9/2013 | Before |
| 7/10/2013 | CTW | Benoit | Demoted to reserve roster | | | Before |
| 7/10/2013 | CTW | Kimbrel | Promoted to active roster | | | Before |
| 7/10/2013 | CTW | Loup | Demoted to reserve roster | | | Before |
| 7/10/2013 | CTW | Medina | Demoted to reserve roster | | | Before |
| 7/10/2013 | CTW | Parnell | Demoted to reserve roster | | | Before |
| 7/10/2013 | CTW | Qualls | Promoted to active roster | | | Before |
| 7/10/2013 | CTW | Rivera,M | Promoted to active roster | | | Before |
| 7/10/2013 | CTW | Siegrist | Promoted to active roster | | | Before |
| 7/11/2013 | DLM | Duensing | Demoted to reserve roster | | | Before |
| 7/11/2013 | DLM | Duffy | Promoted to active roster | | | Before |
| 7/11/2013 | HAR | Carp | Promoted to active roster | | | Before |
| 7/11/2013 | HAR | Eaton | Demoted to reserve roster | | | Before |
| 7/11/2013 | HAR | Gentry | Promoted to active roster | | | Before |
| 7/11/2013 | HAR | Harris,W | Promoted to active roster | | | Before |
| 7/11/2013 | HAR | Lee,Cl | Demoted to reserve roster | | | Before |
| 7/11/2013 | HAR | Rasmus,Col | Placed on Injured List | | 7/10/2013 | Before |
| 7/12/2013 | CAR | Colon | Placed on Injured List | | 7/11/2013 | Before |
| 7/12/2013 | CAR | Garcia,J | Promoted to active roster | | | Before |
| 7/12/2013 | CTW | Loup | Promoted to active roster | | | Before |
| 7/12/2013 | CTW | Siegrist | Demoted to reserve roster | | | Before |
| 7/12/2013 | NYD | Nunez | Activated from Injured List | | | Before |
| 7/12/2013 | NYD | Yelich | Demoted to reserve roster | | | Before |
| 7/12/2013 | NYD | Dunn,A | Traded away | RMO | | After |
| 7/12/2013 | NYD | Viciedo | Acquired via trade | RMO | | After |
| 7/12/2013 | RMO | Dunn,A | Acquired via trade | NYD | | After |
| 7/12/2013 | RMO | Viciedo | Traded away | NYD | | After |
| 7/12/2013 | SOI | Garcia,Le | Promoted to active roster | | | Before |
| 7/12/2013 | SOI | Profar | Demoted to reserve roster | | | Before |
| 7/13/2013 | CEN | Quintero | Promoted to active roster | | | Before |
| 7/13/2013 | CEN | Utley | Placed on Injured List | | 7/12/2013 | Before |
| 7/13/2013 | CIO | Delgado | Promoted to active roster | | | Before |
| 7/13/2013 | CIO | Peavy | Demoted to reserve roster | | | Before |
| 7/13/2013 | GAR | Broxton | Demoted to reserve roster | | | Before |
| 7/13/2013 | GAR | Sipp | Promoted to active roster | | | Before |
| 7/13/2013 | HAR | Davis,K | Promoted to active roster | | | Before |
| 7/13/2013 | HAR | Pearce | Placed on Injured List | | 7/13/2013 | Before |
| 7/13/2013 | NEP | den Dekker | Demoted to reserve roster | | | Before |
| 7/13/2013 | NEP | Fuld | Promoted to active roster | | | Before |
| 7/13/2013 | NEP | Snider | Demoted to reserve roster | | | Before |
| 7/13/2013 | NEP | Walters,Z | Promoted to active roster | | | Before |
| 7/13/2013 | NYD | Viciedo | Promoted to active roster | | | Before |
| 7/13/2013 | TEW | Clark,C | Promoted to active roster | | | Before |
| 7/13/2013 | TEW | Roberts,B | Demoted to reserve roster | | | Before |
| 7/14/2013 | CSS | Francis | Promoted to active roster | | | Before |
| 7/14/2013 | CSS | Harrell | Promoted to active roster | | | Before |
| 7/14/2013 | CSS | Jeffress | Demoted to reserve roster | | | Before |
| 7/14/2013 | CSS | Torres,C | Demoted to reserve roster | | | Before |
| 7/14/2013 | HAR | Gutierrez,F | Promoted to active roster | | | Before |
| 7/14/2013 | HAR | Victorino | Placed on Injured List | | 7/14/2013 | Before |
| 7/14/2013 | NEP | Quentin | Traded away | RMO | | After |
| 7/14/2013 | RMO | Belisle | Promoted to active roster | | | Before |
| 7/14/2013 | RMO | Eovaldi | Demoted to reserve roster | | | Before |
| 7/14/2013 | RMO | Quentin | Acquired via trade | NEP | | After |
| 7/15/2013 | BRK | Johnson,Jo | Promoted to active roster | | | Before |
| 7/15/2013 | BRK | Parker,B | Demoted to reserve roster | | | Before |
| 7/15/2013 | CIO | Capuano | Promoted to active roster | | | Before |
| 7/15/2013 | CIO | Dirks | Demoted to reserve roster | | | Before |
| 7/15/2013 | CIO | Grimm | Placed on Injured List | | 7/15/2013 | Before |
| 7/15/2013 | CIO | Thomas | Promoted to active roster | | | Before |
| 7/15/2013 | RMO | Cowgill | Demoted to reserve roster | | | Before |
| 7/15/2013 | RMO | Quentin | Promoted to active roster | | | Before |
| 7/16/2013 | BAR | Adams,Ma | Demoted to reserve roster | | | Before |
| 7/16/2013 | BAR | Ruf | Promoted to active roster | | | Before |
| 7/16/2013 | BBG | Ankiel | Demoted to reserve roster | | | Before |
| 7/16/2013 | BBG | Barney | Activated from Injured List | | | Before |
| 7/16/2013 | BBG | Deduno | Promoted to active roster | | | Before |
| 7/16/2013 | BBG | Hughes,P | Demoted to reserve roster | | | Before |
| 7/16/2013 | BBG | Kemp | Activated from Injured List | | | Before |
| 7/16/2013 | BBG | Kemp | Demoted to reserve roster | | | Before |
| 7/16/2013 | CEN | Bethancourt | Promoted to active roster | | | Before |
| 7/16/2013 | CEN | Fien | Demoted to reserve roster | | | Before |
| 7/16/2013 | CEN | Quintero | Demoted to reserve roster | | | Before |
| 7/16/2013 | CEN | Varvaro | Promoted to active roster | | | Before |
| 7/16/2013 | RMO | Colome | Traded away | TEW | | After |
| 7/16/2013 | RMO | Latos | Acquired via trade | TEW | | After |
| 7/16/2013 | TEW | Colome | Acquired via trade | RMO | | After |
| 7/16/2013 | TEW | Latos | Traded away | RMO | | After |
| 7/18/2013 | CIN | Davidson | Promoted to active roster | | | Before |
| 7/18/2013 | CIN | Reyes | Placed on Injured List | | 7/16/2013 | Before |
| 7/18/2013 | CTW | Buchholz | Promoted to active roster | | | Before |
| 7/18/2013 | CTW | Hale | Demoted to reserve roster | | | Before |
| 7/18/2013 | GAR | Arrieta | Promoted to active roster | | | Before |
| 7/18/2013 | GAR | Sipp | Demoted to reserve roster | | | Before |
| 7/18/2013 | HHR | Guthrie | Promoted to active roster | | | Before |
| 7/18/2013 | HHR | Hernandez,F | Placed on Injured List | | 7/13/2013 | Before |
| 7/18/2013 | HHR | Perez,M | Promoted to active roster | | | Before |
| 7/18/2013 | HHR | Smyly | Demoted to reserve roster | | | Before |
| 7/18/2013 | TEW | Cahill | Promoted to active roster | | | Before |
| 7/18/2013 | TEW | Collmenter | Demoted to reserve roster | | | Before |
| 7/18/2013 | TEW | Colome | Promoted to active roster | | | Before |
| 7/19/2013 | CSS | Izturis,M | Placed on Injured List | | 7/15/2013 | Before |
| 7/19/2013 | CSS | Marisnick | Demoted to reserve roster | | | Before |
| 7/19/2013 | CSS | Mayberry | Promoted to active roster | | | Before |
| 7/19/2013 | CSS | Schumaker | Promoted to active roster | | | Before |
| 7/20/2013 | SOI | Beckett | Demoted to reserve roster | | | Before |
| 7/20/2013 | SOI | Casilla,S | Promoted to active roster | | | Before |
| 7/20/2013 | SOI | Chavez,En | Promoted to active roster | | | Before |
| 7/20/2013 | SOI | Granderson | Demoted to reserve roster | | | Before |
| 7/21/2013 | CIO | Clevenger | Promoted to active roster | | | Before |
| 7/21/2013 | CIO | Coghlan | Demoted to reserve roster | | | Before |
| 7/21/2013 | DLM | Bogaerts | Demoted to reserve roster | | | Before |
| 7/22/2013 | NYD | Conger | Demoted to reserve roster | | | Before |
| 7/22/2013 | NYD | Conger | Promoted to active roster | | | Before |
| 7/23/2013 | ANN | Barnes,B | Traded away | CTW | | After |
| 7/23/2013 | ANN | Jennings,De | Acquired via trade | CTW | | After |
| 7/23/2013 | BRK | Bianchi | Acquired via trade | RMO | | After |
| 7/23/2013 | BRK | Bourn | Traded away | RMO | | After |
| 7/23/2013 | BRK | Espinosa | Acquired via trade | RMO | | After |
| 7/23/2013 | BRK | Pelfrey | Acquired via trade | RMO | | After |
| 7/23/2013 | BRK | Schafer,L | Acquired via trade | RMO | | After |
| 7/23/2013 | BRK | Villanueva | Traded away | RMO | | After |
| 7/23/2013 | CTW | Buchholz | Demoted to reserve roster | | | Before |
| 7/23/2013 | CTW | Swarzak | Activated from Injured List | | | Before |
| 7/23/2013 | CTW | Barnes,B | Acquired via trade | ANN | | After |
| 7/23/2013 | CTW | Jennings,De | Traded away | ANN | | After |
| 7/23/2013 | NYD | Correia | Placed on Injured List | | 7/23/2013 | Before |
| 7/23/2013 | NYD | Richard | Promoted to active roster | | | Before |
| 7/23/2013 | RMO | Bianchi | Traded away | BRK | | After |
| 7/23/2013 | RMO | Bourn | Acquired via trade | BRK | | After |
| 7/23/2013 | RMO | Espinosa | Traded away | BRK | | After |
| 7/23/2013 | RMO | Pelfrey | Traded away | BRK | | After |
| 7/23/2013 | RMO | Schafer,L | Traded away | BRK | | After |
| 7/23/2013 | RMO | Villanueva | Acquired via trade | BRK | | After |
| 7/24/2013 | ANN | Revere | Demoted to reserve roster | | | Before |
| 7/24/2013 | BBG | Holland,D | Demoted to reserve roster | | | Before |
| 7/24/2013 | BBG | Iannetta | Demoted to reserve roster | | | Before |
| 7/24/2013 | BBG | Iannetta | Promoted to active roster | | | Before |
| 7/24/2013 | BBG | Lobaton | Demoted to reserve roster | | | Before |
| 7/24/2013 | BBG | Hernandez,F | Acquired via trade | HHR | | After |
| 7/24/2013 | BBG | Holland,D | Acquired via trade | HHR | | After |
| 7/24/2013 | BBG | Iannetta | Acquired via trade | HHR | | After |
| 7/24/2013 | BBG | Smyly | Acquired via trade | HHR | | After |
| 7/24/2013 | BRK | Pelfrey | Promoted to active roster | | | Before |
| 7/24/2013 | CAR | Garcia,J | Demoted to reserve roster | | | Before |
| 7/24/2013 | CAR | Norris,B | Activated from Injured List | | | Before |
| 7/24/2013 | CIN | Miller,A | Demoted to reserve roster | | | Before |
| 7/24/2013 | CIN | Wilhelmsen | Promoted to active roster | | | Before |
| 7/24/2013 | CIN | Culberson | Traded away | HHR | | After |
| 7/24/2013 | CIN | Gaudin | Acquired via trade | HHR | | After |
| 7/24/2013 | CTW | Barnes,B | Promoted to active roster | | | Before |
| 7/24/2013 | HHR | Breslow | Demoted to reserve roster | | | Before |
| 7/24/2013 | HHR | Maness | Promoted to active roster | | | Before |
| 7/24/2013 | HHR | Matusz | Demoted to reserve roster | | | Before |
| 7/24/2013 | HHR | Ross,R | Promoted to active roster | | | Before |
| 7/24/2013 | HHR | Culberson | Acquired via trade | CIN | | After |
| 7/24/2013 | HHR | Gaudin | Traded away | CIN | | After |
| 7/24/2013 | HHR | Hernandez,F | Traded away | BBG | | After |
| 7/24/2013 | HHR | Holland,D | Traded away | BBG | | After |
| 7/24/2013 | HHR | Iannetta | Traded away | BBG | | After |
| 7/24/2013 | HHR | Smyly | Traded away | BBG | | After |
| 7/24/2013 | RMO | Belisle | Demoted to reserve roster | | | Before |
| 7/24/2013 | RMO | Bourn | Promoted to active roster | | | Before |
| 7/24/2013 | RMO | Estrada | Demoted to reserve roster | | | Before |
| 7/24/2013 | RMO | Morrison | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Callaspo | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Clark,C | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Garza | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Gonzalez,C | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Hoover | Demoted to reserve roster | | | Before |
| 7/24/2013 | TEW | Johnson,Ji | Promoted to active roster | | | Before |
| 7/24/2013 | TEW | Lincecum | Activated from Injured List | | | Before |
| 7/24/2013 | TEW | Roberts,B | Promoted to active roster | | | Before |
| 7/24/2013 | TEW | Robinson,D | Promoted to active roster | | | Before |
| 7/24/2013 | TEW | Rodriguez,A | Promoted to active roster | | | Before |
| 7/25/2013 | ANN | Chapman,K | Promoted to active roster | | | Before |
| 7/25/2013 | ANN | Crain | Demoted to reserve roster | | | Before |
| 7/25/2013 | BBG | Holland,D | Promoted to active roster | | | Before |
| 7/25/2013 | BBG | Smyly | Promoted to active roster | | | Before |
| 7/25/2013 | BBG | Street | Demoted to reserve roster | | | Before |
| 7/25/2013 | BBG | Weaver | Demoted to reserve roster | | | Before |
| 7/25/2013 | BRK | Bianchi | Promoted to active roster | | | Before |
| 7/25/2013 | BRK | Joyce | Demoted to reserve roster | | | Before |
| 7/25/2013 | BRK | Schafer,L | Promoted to active roster | | | Before |
| 7/25/2013 | BRK | Young,C | Placed on Injured List | | 7/24/2013 | Before |
| 7/25/2013 | CIN | Gaudin | Promoted to active roster | | | Before |
| 7/25/2013 | CIN | Pettitte | Demoted to reserve roster | | | Before |
| 7/25/2013 | CIO | Garcia,F | Promoted to active roster | | | Before |
| 7/25/2013 | CIO | Keuchel | Demoted to reserve roster | | | Before |
| 7/25/2013 | CIO | Kubel | Promoted to active roster | | | Before |
| 7/25/2013 | CIO | Pollock | Demoted to reserve roster | | | Before |
| 7/25/2013 | CIO | Stewart | Demoted to reserve roster | | | Before |
| 7/25/2013 | CIO | Terdoslavich | Promoted to active roster | | | Before |
| 7/25/2013 | FDH | Hill,A | Placed on Injured List | | 7/25/2013 | Before |
| 7/25/2013 | FDH | Romo | Promoted to active roster | | | Before |
| 7/25/2013 | HAR | Gentry | Demoted to reserve roster | | | Before |
| 7/25/2013 | HAR | Rasmus,Col | Activated from Injured List | | | Before |
| 7/25/2013 | HHR | McAllister | Promoted to active roster | | | Before |
| 7/25/2013 | NEP | Barmes | Promoted to active roster | | | Before |
| 7/25/2013 | NEP | Weeks,J | Demoted to reserve roster | | | Before |
| 7/25/2013 | RMO | Belisle | Promoted to active roster | | | Before |
| 7/25/2013 | RMO | Cosart | Demoted to reserve roster | | | Before |
| 7/26/2013 | CAR | Colon | Activated from Injured List | | | Before |
| 7/26/2013 | CAR | Ogando | Demoted to reserve roster | | | Before |
| 7/27/2013 | CEN | Bethancourt | Demoted to reserve roster | | | Before |
| 7/27/2013 | CEN | Utley | Activated from Injured List | | | Before |
| 7/27/2013 | CTW | Harris,B | Demoted to reserve roster | | | Before |
| 7/27/2013 | CTW | Harris,B | Promoted to active roster | | | Before |
| 7/27/2013 | CTW | Hudson | Activated from Injured List | | | Before |
| 7/27/2013 | CTW | Loup | Demoted to reserve roster | | | Before |
| 7/27/2013 | CTW | Loup | Promoted to active roster | | | Before |
| 7/27/2013 | CTW | Swarzak | Demoted to reserve roster | | | Before |
| 7/28/2013 | CAR | Garcia,J | Traded away | HHR | | After |
| 7/28/2013 | CAR | Lough | Acquired via trade | HHR | | After |
| 7/28/2013 | CAR | Rosenthal | Acquired via trade | HHR | | After |
| 7/28/2013 | CAR | Ziegler | Traded away | HHR | | After |
| 7/28/2013 | CTW | Hudson | Placed on Injured List | | 7/28/2013 | Before |
| 7/28/2013 | CTW | Swarzak | Promoted to active roster | | | Before |
| 7/28/2013 | HHR | Garcia,J | Acquired via trade | CAR | | After |
| 7/28/2013 | HHR | Lough | Traded away | CAR | | After |
| 7/28/2013 | HHR | Rosenthal | Traded away | CAR | | After |
| 7/28/2013 | HHR | Ziegler | Acquired via trade | CAR | | After |
| 7/29/2013 | GAR | Calhoun | Demoted to reserve roster | | | Before |
| 7/29/2013 | GAR | Duda | Demoted to reserve roster | | | Before |
| 7/29/2013 | GAR | Kottaras | Promoted to active roster | | | Before |
| 7/29/2013 | GAR | Marte,S | Activated from Injured List | | | Before |
| 7/29/2013 | HAR | Rasmus,Col | Activated from Injured List | | | Before |
| 7/30/2013 | CAR | Gattis | Promoted to active roster | | | Before |
| 7/30/2013 | CAR | Lind | Promoted to active roster | | | Before |
| 7/30/2013 | CAR | Puig | Demoted to reserve roster | | | Before |
| 7/30/2013 | CAR | Roberts,R | Demoted to reserve roster | | | Before |
| 7/30/2013 | CIO | Grimm | Activated from Injured List | | | Before |
| 7/30/2013 | CIO | Strop | Demoted to reserve roster | | | Before |
| 7/30/2013 | GAR | Arrieta | Demoted to reserve roster | | | Before |
| 7/30/2013 | GAR | Fiers | Promoted to active roster | | | Before |
| 7/30/2013 | GAR | Gee | Placed on Injured List | | 7/30/2013 | Before |
| 7/30/2013 | GAR | Richards | Activated from Injured List | | | Before |
| 7/30/2013 | HHR | Thayer | Promoted to active roster | | | Before |
| 7/31/2013 | BBG | Dempster | Promoted to active roster | | | Before |
| 7/31/2013 | BBG | Doubront | Demoted to reserve roster | | | Before |
| 7/31/2013 | BBG | Hafner | Demoted to reserve roster | | | Before |
| 7/31/2013 | BBG | Pujols | Activated from Injured List | | | Before |
| 7/31/2013 | BBG | Smyly | Demoted to reserve roster | | | Before |
| 7/31/2013 | BBG | Turner,Ja | Promoted to active roster | | | Before |
| 7/31/2013 | BBG | Lobaton | Traded away | HHR | | After |
| 7/31/2013 | BBG | McLouth | Acquired via trade | CAR | | After |
| 7/31/2013 | BBG | Ruggiano | Traded away | CAR | | After |
| 7/31/2013 | CAR | McLouth | Traded away | BBG | | After |
| 7/31/2013 | CAR | Murphy,Do | Acquired via trade | NEP | | After |
| 7/31/2013 | CAR | Ruggiano | Acquired via trade | BBG | | After |
| 7/31/2013 | CTW | Benoit | Traded away | FDH | | After |
| 7/31/2013 | CTW | Cotts | Acquired via trade | FDH | | After |
| 7/31/2013 | CTW | Nathan | Acquired via trade | FDH | | After |
| 7/31/2013 | FDH | Benoit | Acquired via trade | CTW | | After |
| 7/31/2013 | FDH | Cotts | Traded away | CTW | | After |
| 7/31/2013 | FDH | Nathan | Traded away | CTW | | After |
| 7/31/2013 | HHR | Breslow | Traded away | RMO | | After |
| 7/31/2013 | HHR | Davis,R | Traded away | RMO | | After |
| 7/31/2013 | HHR | Lobaton | Acquired via trade | BBG | | After |
| 7/31/2013 | HHR | Maness | Traded away | RMO | | After |
| 7/31/2013 | HHR | Rodriguez,F | Acquired via trade | RMO | | After |
| 7/31/2013 | NEP | Murphy,Do | Traded away | CAR | | After |
| 7/31/2013 | RMO | Breslow | Acquired via trade | HHR | | After |
| 7/31/2013 | RMO | Davis,R | Acquired via trade | HHR | | After |
| 7/31/2013 | RMO | Maness | Acquired via trade | HHR | | After |
| 7/31/2013 | RMO | Rodriguez,F | Traded away | HHR | | After |
| 8/1/2013 | BBG | McLouth | Promoted to active roster | | | Before |
| 8/1/2013 | CAR | Brothers | Demoted to reserve roster | | | Before |
| 8/1/2013 | CAR | Gattis | Demoted to reserve roster | | | Before |
| 8/1/2013 | CAR | Machi | Promoted to active roster | | | Before |
| 8/1/2013 | CAR | Marshall,S | Promoted to active roster | | | Before |
| 8/1/2013 | CAR | Norris,B | Demoted to reserve roster | | | Before |
| 8/1/2013 | CAR | Ogando | Promoted to active roster | | | Before |
| 8/1/2013 | CAR | Wilson,Ju | Demoted to reserve roster | | | Before |
| 8/1/2013 | CIN | Grilli | Demoted to reserve roster | | | Before |
| 8/1/2013 | CIN | Reyes | Activated from Injured List | | | Before |
| 8/1/2013 | CTW | Cotts | Demoted to reserve roster | | | Before |
| 8/1/2013 | CTW | Loup | Demoted to reserve roster | | | Before |
| 8/1/2013 | DLM | Lagares | Promoted to active roster | | | Before |
| 8/1/2013 | DLM | Stubbs | Demoted to reserve roster | | | Before |
| 8/1/2013 | DLM | Stubbs | Promoted to active roster | | | Before |
| 8/1/2013 | HHR | Hanigan | Placed on Injured List | | 8/1/2013 | Before |
| 8/1/2013 | HHR | Lawrie | Promoted to active roster | | | Before |
| 8/1/2013 | HHR | Lobaton | Promoted to active roster | | | Before |
| 8/1/2013 | HHR | Rodriguez,F | Promoted to active roster | | | Before |
| 8/1/2013 | HHR | Sweeney | Activated from Injured List | | | Before |
| 8/1/2013 | HHR | Venable | Demoted to reserve roster | | | Before |
| 8/1/2013 | RMO | Belisle | Demoted to reserve roster | | | Before |
| 8/1/2013 | RMO | Bourn | Demoted to reserve roster | | | Before |
| 8/1/2013 | RMO | Breslow | Promoted to active roster | | | Before |
| 8/1/2013 | RMO | Rodney | Demoted to reserve roster | | | Before |
| 8/3/2013 | CSS | Hairston,J | Placed on Injured List | | 8/2/2013 | Before |
| 8/3/2013 | CSS | Izturis,M | Activated from Injured List | | | Before |
| 8/3/2013 | HAR | Davis,K | Demoted to reserve roster | | | Before |
| 8/3/2013 | HAR | Eaton | Promoted to active roster | | | Before |
| 8/3/2013 | HHR | Matusz | Promoted to active roster | | | Before |
| 8/3/2013 | HHR | Perez,M | Placed on Injured List | | 8/2/2013 | Before |
| 8/4/2013 | NEP | Almonte,A | Demoted to reserve roster | | | Before |
| 8/5/2013 | CIN | Cespedes | Placed on Injured List | | 8/5/2013 | Before |
| 8/5/2013 | CIN | Gomes,J | Promoted to active roster | | | Before |
| 8/5/2013 | CSS | Price | Demoted to reserve roster | | | Before |
| 8/5/2013 | CSS | Stults | Promoted to active roster | | | Before |
| 8/5/2013 | DLM | Duffy | Demoted to reserve roster | | | Before |
| 8/5/2013 | DLM | Lowe,M | Promoted to active roster | | | Before |
| 8/5/2013 | GAR | Fiers | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Alburquerque | Promoted to active roster | | | Before |
| 8/5/2013 | SOI | Anderson,Bre | Promoted to active roster | | | Before |
| 8/5/2013 | SOI | Avila | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Axford | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Beckett | Promoted to active roster | | | Before |
| 8/5/2013 | SOI | de la Rosa,J | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Gibson | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Maldonado | Promoted to active roster | | | Before |
| 8/5/2013 | SOI | McFarland | Demoted to reserve roster | | | Before |
| 8/5/2013 | SOI | Peralta,Jh | Placed on Injured List | | 8/5/2013 | Before |
| 8/5/2013 | SOI | Semien | Promoted to active roster | | | Before |
| 8/5/2013 | SOI | Warren | Promoted to active roster | | | Before |
| 8/6/2013 | BAR | Ramirez,H | Demoted to reserve roster | | | Before |
| 8/6/2013 | BAR | Tulowitzki | Promoted to active roster | | | Before |
| 8/6/2013 | CIO | Cruz,T | Promoted to active roster | | | Before |
| 8/6/2013 | CIO | Montero,M | Demoted to reserve roster | | | Before |
| 8/6/2013 | NEP | Adrianza | Promoted to active roster | | | Before |
| 8/6/2013 | NEP | Brantly | Promoted to active roster | | | Before |
| 8/6/2013 | NEP | Herrmann | Demoted to reserve roster | | | Before |
| 8/7/2013 | NYD | Correia | Activated from Injured List | | | Before |
| 8/7/2013 | NYD | Morton | Demoted to reserve roster | | | Before |
| 8/8/2013 | CEN | Chirinos | Demoted to reserve roster | | | Before |
| 8/8/2013 | CEN | Quintero | Promoted to active roster | | | Before |
| 8/9/2013 | BRK | Espinosa | Promoted to active roster | | | Before |
| 8/9/2013 | BRK | Feliz | Promoted to active roster | | | Before |
| 8/9/2013 | BRK | LeMahieu | Demoted to reserve roster | | | Before |
| 8/9/2013 | BRK | Morrow | Demoted to reserve roster | | | Before |
| 8/9/2013 | CSS | Grossman | Demoted to reserve roster | | | Before |
| 8/9/2013 | CSS | Kotsay | Activated from Injured List | | | Before |
| 8/9/2013 | FDH | Hill,A | Activated from Injured List | | | Before |
| 8/9/2013 | FDH | Sanchez,G | Demoted to reserve roster | | | Before |
| 8/9/2013 | FDH | Sanchez,G | Promoted to active roster | | | Before |
| 8/9/2013 | HHR | Pillar | Demoted to reserve roster | | | Before |
| 8/9/2013 | HHR | Shuck | Promoted to active roster | | | Before |
| 8/9/2013 | TEW | Hoover | Promoted to active roster | | | Before |
| 8/9/2013 | TEW | Janssen | Demoted to reserve roster | | | Before |
| 8/10/2013 | CEN | Green,N | Promoted to active roster | | | Before |
| 8/10/2013 | CEN | Kawasaki | Demoted to reserve roster | | | Before |
| 8/10/2013 | CIO | Bailey,A | Promoted to active roster | | | Before |
| 8/10/2013 | CIO | Manship | Demoted to reserve roster | | | Before |
| 8/10/2013 | CIO | Rupp | Demoted to reserve roster | | | Before |
| 8/10/2013 | CIO | Sellers | Promoted to active roster | | | Before |
| 8/11/2013 | HAR | Carp | Placed on Injured List | | 8/11/2013 | Before |
| 8/11/2013 | RMO | Albers,M | Demoted to reserve roster | | | Before |
| 8/11/2013 | RMO | Logan | Demoted to reserve roster | | | Before |
| 8/11/2013 | RMO | Logan | Promoted to active roster | | | Before |
| 8/11/2013 | RMO | Rodney | Promoted to active roster | | | Before |
| 8/12/2013 | BAR | Alvarez,H | Demoted to reserve roster | | | Before |
| 8/12/2013 | BAR | Walker,T | Promoted to active roster | | | Before |
| 8/12/2013 | BBG | Deduno | Demoted to reserve roster | | | Before |
| 8/12/2013 | BBG | Hernandez,F | Activated from Injured List | | | Before |
| 8/12/2013 | CEN | Avilan | Demoted to reserve roster | | | Before |
| 8/12/2013 | CEN | Oberholtzer | Promoted to active roster | | | Before |
| 8/12/2013 | CIO | Gillespie | Promoted to active roster | | | Before |
| 8/12/2013 | CIO | Moustakas | Demoted to reserve roster | | | Before |
| 8/12/2013 | DLM | Lackey | Demoted to reserve roster | | | Before |
| 8/12/2013 | DLM | Putnam | Promoted to active roster | | | Before |
| 8/12/2013 | DLM | Ramos,AJ | Demoted to reserve roster | | | Before |
| 8/12/2013 | DLM | Withrow | Promoted to active roster | | | Before |
| 8/12/2013 | NEP | Adrianza | Demoted to reserve roster | | | Before |
| 8/12/2013 | NEP | Butera | Promoted to active roster | | | Before |
| 8/12/2013 | SOI | Brasier | Promoted to active roster | | | Before |
| 8/12/2013 | SOI | Haren | Demoted to reserve roster | | | Before |
| 8/12/2013 | SOI | Stammen | Demoted to reserve roster | | | Before |
| 8/12/2013 | SOI | Valverde | Promoted to active roster | | | Before |
| 8/13/2013 | ANN | Cingrani | Demoted to reserve roster | | | Before |
| 8/13/2013 | CIN | Gomes,J | Placed on Injured List | | 8/13/2013 | Before |
| 8/13/2013 | CIN | Tabata | Promoted to active roster | | | Before |
| 8/13/2013 | CSS | Gimenez,H | Promoted to active roster | | | Before |
| 8/13/2013 | CSS | Ruiz | Demoted to reserve roster | | | Before |
| 8/13/2013 | HAR | Victorino | Activated from Injured List | | | Before |
| 8/14/2013 | ANN | Balfour | Promoted to active roster | | | Before |
| 8/14/2013 | ANN | Fernandez | Demoted to reserve roster | | | Before |
| 8/14/2013 | ANN | Nolasco | Promoted to active roster | | | Before |
| 8/14/2013 | CAR | Harvey | Demoted to reserve roster | | | Before |
| 8/14/2013 | CAR | Thornburg | Promoted to active roster | | | Before |
| 8/14/2013 | CEN | Abreu | Promoted to active roster | | | Before |
| 8/14/2013 | CEN | DeJesus | Demoted to reserve roster | | | Before |
| 8/14/2013 | CEN | Gose | Promoted to active roster | | | Before |
| 8/14/2013 | CEN | Pagan | Demoted to reserve roster | | | Before |
| 8/14/2013 | CIN | Cueto | Promoted to active roster | | | Before |
| 8/14/2013 | CIN | Gaudin | Demoted to reserve roster | | | Before |
| 8/14/2013 | CTW | Cotts | Promoted to active roster | | | Before |
| 8/14/2013 | CTW | Rivera,M | Demoted to reserve roster | | | Before |
| 8/14/2013 | NEP | Snider | Promoted to active roster | | | Before |
| 8/14/2013 | NEP | Walters,Z | Demoted to reserve roster | | | Before |
| 8/14/2013 | NYD | Conger | Promoted to active roster | | | Before |
| 8/14/2013 | NYD | Cruz,L | Promoted to active roster | | | Before |
| 8/14/2013 | NYD | Humber | Activated from Injured List | | | Before |
| 8/14/2013 | NYD | Morton | Promoted to active roster | | | Before |
| 8/14/2013 | NYD | Paredes | Demoted to reserve roster | | | Before |
| 8/14/2013 | NYD | Pena,R | Demoted to reserve roster | | | Before |
| 8/14/2013 | NYD | Sanabia | Demoted to reserve roster | | | Before |
| 8/14/2013 | NYD | Worley | Demoted to reserve roster | | | Before |
| 8/15/2013 | CSS | Bauer | Promoted to active roster | | | Before |
| 8/15/2013 | CSS | Herrera,K | Demoted to reserve roster | | | Before |
| 8/15/2013 | HAR | Eaton | Demoted to reserve roster | | | Before |
| 8/15/2013 | HAR | Pearce | Activated from Injured List | | | Before |
| 8/16/2013 | BAR | Wacha | Demoted to reserve roster | | | Before |
| 8/16/2013 | BAR | Watson | Promoted to active roster | | | Before |
| 8/16/2013 | BRK | Brignac | Promoted to active roster | | | Before |
| 8/16/2013 | BRK | Clemens | Promoted to active roster | | | Before |
| 8/16/2013 | BRK | Smoak | Demoted to reserve roster | | | Before |
| 8/16/2013 | BRK | Straily | Demoted to reserve roster | | | Before |
| 8/16/2013 | GAR | Dyson,J | Demoted to reserve roster | | | Before |
| 8/16/2013 | GAR | Gee | Activated from Injured List | | | Before |
| 8/16/2013 | GAR | Martinez,JD | Promoted to active roster | | | Before |
| 8/16/2013 | GAR | Santana,E | Demoted to reserve roster | | | Before |
| 8/16/2013 | HHR | Arenado | Demoted to reserve roster | | | Before |
| 8/16/2013 | HHR | Hanigan | Activated from Injured List | | | Before |
| 8/16/2013 | SOI | Dobbs | Promoted to active roster | | | Before |
| 8/16/2013 | SOI | Ibanez | Demoted to reserve roster | | | Before |
| 8/16/2013 | SOI | Sandoval | Demoted to reserve roster | | | Before |
| 8/16/2013 | SOI | Wong | Promoted to active roster | | | Before |
| 8/17/2013 | ANN | Werth | Demoted to reserve roster | | | Before |
| 8/17/2013 | CAR | Brothers | Promoted to active roster | | | Before |
| 8/17/2013 | CAR | Rosenthal | Demoted to reserve roster | | | Before |
| 8/17/2013 | CAR | Shaw | Demoted to reserve roster | | | Before |
| 8/17/2013 | CAR | Wilson,Ju | Promoted to active roster | | | Before |
| 8/17/2013 | CSS | Bauer | Demoted to reserve roster | | | Before |
| 8/17/2013 | CSS | Mendoza | Demoted to reserve roster | | | Before |
| 8/17/2013 | CSS | Thornton | Promoted to active roster | | | Before |
| 8/17/2013 | CSS | Torres,C | Promoted to active roster | | | Before |
| 8/17/2013 | CTW | Hudson | Activated from Injured List | | | Before |
| 8/17/2013 | CTW | Iwakuma | Demoted to reserve roster | | | Before |
| 8/17/2013 | DLM | Chen,W | Placed on Injured List | | 8/17/2013 | Before |
| 8/17/2013 | DLM | Peralta,W | Promoted to active roster | | | Before |
| 8/17/2013 | HAR | Harris,W | Demoted to reserve roster | | | Before |
| 8/17/2013 | HAR | Torres,Al | Promoted to active roster | | | Before |
| 8/19/2013 | ANN | Bourjos | Promoted to active roster | | | Before |
| 8/19/2013 | BRK | Feliz | Demoted to reserve roster | | | Before |
| 8/19/2013 | BRK | Young,C | Activated from Injured List | | | Before |
| 8/19/2013 | CIN | Freeman,F | Placed on Injured List | | 8/18/2013 | Before |
| 8/19/2013 | CIN | Loney | Promoted to active roster | | | Before |
| 8/19/2013 | CIO | Clevenger | Demoted to reserve roster | | | Before |
| 8/19/2013 | CIO | Grimm | Demoted to reserve roster | | | Before |
| 8/19/2013 | CIO | Grimm | Promoted to active roster | | | Before |
| 8/19/2013 | CIO | McDonald,Jo | Demoted to reserve roster | | | Before |
| 8/19/2013 | CIO | McDonald,Jo | Promoted to active roster | | | Before |
| 8/19/2013 | CIO | Stewart | Promoted to active roster | | | Before |
| 8/19/2013 | CSS | Cain,L | Demoted to reserve roster | | | Before |
| 8/19/2013 | CSS | Hairston,J | Activated from Injured List | | | Before |
| 8/19/2013 | DLM | Lackey | Promoted to active roster | | | Before |
| 8/19/2013 | DLM | Putnam | Demoted to reserve roster | | | Before |
| 8/19/2013 | GAR | Duke | Promoted to active roster | | | Before |
| 8/19/2013 | GAR | Gonzalez,Ma | Promoted to active roster | | | Before |
| 8/19/2013 | GAR | Kottaras | Demoted to reserve roster | | | Before |
| 8/19/2013 | GAR | McGee | Demoted to reserve roster | | | Before |
| 8/20/2013 | CAR | Carpenter,DD | Demoted to reserve roster | | | Before |
| 8/20/2013 | CAR | Santos,S | Promoted to active roster | | | Before |
| 8/20/2013 | CEN | Pena,B | Activated from Injured List | | | Before |
| 8/20/2013 | CEN | Quintero | Demoted to reserve roster | | | Before |
| 8/20/2013 | CSS | Mendoza | Promoted to active roster | | | Before |
| 8/20/2013 | CSS | Thornton | Demoted to reserve roster | | | Before |
| 8/20/2013 | CTW | Ransom | Promoted to active roster | | | Before |
| 8/20/2013 | CTW | Wright,D | Demoted to reserve roster | | | Before |
| 8/20/2013 | GAR | Richards | Demoted to reserve roster | | | Before |
| 8/20/2013 | GAR | Ross,T | Promoted to active roster | | | Before |
| 8/20/2013 | NEP | Rondon,H | Demoted to reserve roster | | | Before |
| 8/20/2013 | NEP | Russell | Promoted to active roster | | | Before |
| 8/21/2013 | NEP | Alvarez,J | Promoted to active roster | | | Before |
| 8/21/2013 | NEP | Salas | Demoted to reserve roster | | | Before |
| 8/22/2013 | BAR | Hill,R | Demoted to reserve roster | | | Before |
| 8/22/2013 | BAR | Perez,JP | Promoted to active roster | | | Before |
| 8/22/2013 | CIN | Cueto | Demoted to reserve roster | | | Before |
| 8/22/2013 | CIN | Salazar | Promoted to active roster | | | Before |
| 8/22/2013 | CIO | Kazmir | Demoted to reserve roster | | | Before |
| 8/22/2013 | CIO | Peavy | Promoted to active roster | | | Before |
| 8/22/2013 | SOI | Murphy,Dan | Demoted to reserve roster | | | Before |
| 8/22/2013 | SOI | Romine,An | Promoted to active roster | | | Before |
| 8/23/2013 | BBG | Ankiel | Promoted to active roster | | | Before |
| 8/23/2013 | BBG | Bautista | Placed on Injured List | | 8/22/2013 | Before |
| 8/23/2013 | BBG | Deduno | Promoted to active roster | | | Before |
| 8/23/2013 | BBG | Kendrick,K | Demoted to reserve roster | | | Before |
| 8/23/2013 | BBG | Turner,Ja | Demoted to reserve roster | | | Before |
| 8/23/2013 | BBG | Weaver | Promoted to active roster | | | Before |
| 8/23/2013 | BRK | Hughes,J | Promoted to active roster | | | Before |
| 8/23/2013 | BRK | Ryu | Demoted to reserve roster | | | Before |
| 8/23/2013 | CTW | Nathan | Demoted to reserve roster | | | Before |
| 8/23/2013 | CTW | Thielbar | Promoted to active roster | | | Before |
| 8/23/2013 | RMO | Logan | Promoted to active roster | | | Before |
| 8/23/2013 | RMO | Morrison | Promoted to active roster | | | Before |
| 8/23/2013 | RMO | Rodney | Demoted to reserve roster | | | Before |
| 8/23/2013 | RMO | Valbuena | Demoted to reserve roster | | | Before |
| 8/23/2013 | SOI | Bass | Demoted to reserve roster | | | Before |
| 8/23/2013 | SOI | Brasier | Demoted to reserve roster | | | Before |
| 8/23/2013 | SOI | Elmore | Promoted to active roster | | | Before |
| 8/23/2013 | SOI | Goins | Promoted to active roster | | | Before |
| 8/23/2013 | TEW | Callaspo | Promoted to active roster | | | Before |
| 8/23/2013 | TEW | Rodriguez,A | Placed on Injured List | | 8/23/2013 | Before |
| 8/24/2013 | CIN | Martin,L | Demoted to reserve roster | | | Before |
| 8/24/2013 | CIN | Schafer,J | Promoted to active roster | | | Before |
| 8/24/2013 | CTW | Ross,C | Demoted to reserve roster | | | Before |
| 8/24/2013 | CTW | Tuiasosopo | Demoted to reserve roster | | | Before |
| 8/24/2013 | CTW | Tuiasosopo | Promoted to active roster | | | Before |
| 8/24/2013 | CTW | Wieters | Promoted to active roster | | | Before |
| 8/25/2013 | ANN | Greinke | Demoted to reserve roster | | | Before |
| 8/25/2013 | CIN | Miller,A | Promoted to active roster | | | Before |
| 8/25/2013 | CIN | Perkins | Demoted to reserve roster | | | Before |
| 8/25/2013 | CIO | McDonald,Jo | Promoted to active roster | | | Before |
| 8/25/2013 | CIO | Moustakas | Demoted to reserve roster | | | Before |
| 8/25/2013 | CIO | Moustakas | Promoted to active roster | | | Before |
| 8/25/2013 | CIO | Uggla | Placed on Injured List | | 8/23/2013 | Before |
| 8/25/2013 | NEP | Kelley | Demoted to reserve roster | | | Before |
| 8/25/2013 | NEP | Lopez,J | Promoted to active roster | | | Before |
| 8/25/2013 | TEW | Colome | Demoted to reserve roster | | | Before |
| 8/25/2013 | TEW | Colome | Promoted to active roster | | | Before |
| 8/26/2013 | SOI | Montero,J | Promoted to active roster | | | Before |
| 8/26/2013 | SOI | Zunino | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Clark,C | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Colome | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Garza | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Hernandez,D | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Hoover | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Matsuzaka | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Mazzaro | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Sanchez,T | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Stauffer | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Veras | Demoted to reserve roster | | | Before |
| 8/26/2013 | TEW | Vogelsong | Promoted to active roster | | | Before |
| 8/26/2013 | TEW | Wheeler,Z | Demoted to reserve roster | | | Before |
| 8/27/2013 | BBG | Baker,Jo | Promoted to active roster | | | Before |
| 8/27/2013 | BBG | Morse | Placed on Injured List | | 8/25/2013 | Before |
| 8/28/2013 | ANN | Corporan | Promoted to active roster | | | Before |
| 8/28/2013 | ANN | Gomes,Y | Demoted to reserve roster | | | Before |
| 8/28/2013 | ANN | Morales,K | Promoted to active roster | | | Before |
| 8/28/2013 | ANN | Mujica | Promoted to active roster | | | Before |
| 8/28/2013 | ANN | Napoli | Placed on Injured List | | 8/26/2013 | Before |
| 8/28/2013 | BRK | Leon | Promoted to active roster | | | Before |
| 8/28/2013 | BRK | Molina,J | Demoted to reserve roster | | | Before |
| 8/28/2013 | CIN | Gomes,J | Activated from Injured List | | | Before |
| 8/28/2013 | CIN | Tabata | Demoted to reserve roster | | | Before |
| 8/28/2013 | DLM | De Fratus | Promoted to active roster | | | Before |
| 8/28/2013 | DLM | Edgin | Demoted to reserve roster | | | Before |
| 8/28/2013 | HAR | Kluber | Promoted to active roster | | | Before |
| 8/28/2013 | HAR | Sale | Placed on Injured List | | 8/28/2013 | Before |
| 8/28/2013 | HHR | Clippard | Demoted to reserve roster | | | Before |
| 8/28/2013 | HHR | Garcia,J | Promoted to active roster | | | Before |
| 8/30/2013 | CAR | Chavez,J | Promoted to active roster | | | Before |
| 8/30/2013 | CAR | Machi | Demoted to reserve roster | | | Before |
| 8/30/2013 | CTW | Cotts | Demoted to reserve roster | | | Before |
| 8/30/2013 | CTW | Loup | Promoted to active roster | | | Before |
| 8/30/2013 | DLM | Lowe,M | Demoted to reserve roster | | | Before |
| 8/30/2013 | DLM | O'Day | Promoted to active roster | | | Before |
| 8/30/2013 | GAR | Duke | Demoted to reserve roster | | | Before |
| 8/30/2013 | GAR | Kottaras | Promoted to active roster | | | Before |
| 8/30/2013 | GAR | Neshek | Promoted to active roster | | | Before |
| 8/30/2013 | GAR | Van Slyke | Demoted to reserve roster | | | Before |
| 8/31/2013 | ANN | Bay | Promoted to active roster | | | Before |
| 8/31/2013 | ANN | Bourjos | Placed on Injured List | | 8/29/2013 | Before |
| 8/31/2013 | ANN | Holliday | Demoted to reserve roster | | | Before |
| 8/31/2013 | ANN | Robinson,S | Promoted to active roster | | | Before |
| 8/31/2013 | CIN | Cespedes | Activated from Injured List | | | Before |
| 8/31/2013 | CIN | Owings | Demoted to reserve roster | | | Before |
| 8/31/2013 | SOI | Bourgeois | Promoted to active roster | | | Before |
| 8/31/2013 | SOI | Hunter,Tom | Demoted to reserve roster | | | Before |
| 9/1/2013 | CIN | Hernandez,Ra | Promoted to active roster | | | Before |
| 9/1/2013 | CIN | Miller,C | Promoted to active roster | | | Before |
| 9/1/2013 | CIN | Nieves | Promoted to active roster | | | Before |
| 9/1/2013 | CIN | Owings | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Bogusevic | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Ellis,M | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Gennett | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Harris,B | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Iwakuma | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Medina | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Miller,B | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Nuno | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Olivo | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Parnell | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Perez,JC | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Pinto | Activated from Injured List | | | Before |
| 9/1/2013 | CTW | Rivera,M | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Tuiasosopo | Promoted to active roster | | | Before |
| 9/1/2013 | CTW | Wallace | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Aviles | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Butler,K | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Choate | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Cumpton | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Francisco,J | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Helton | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Lake | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Romo | Promoted to active roster | | | Before |
| 9/1/2013 | FDH | Strasburg | Demoted to reserve roster | | | Before |
| 9/1/2013 | FDH | Wilson,B | Promoted to active roster | | | Before |
| 9/1/2013 | SOI | Beckett | Demoted to reserve roster | | | Before |
| 9/2/2013 | ANN | Ackley | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Barton | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Crain | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | DeRosa | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Dominguez,M | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Fernandez | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Flaherty | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Hill,K | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Lindstrom | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Niese | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Outman | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Revere | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Ross,D | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Sanchez,H | Promoted to active roster | | | Before |
| 9/2/2013 | ANN | Soriano,R | Promoted to active roster | | | Before |
| 9/2/2013 | BRK | Morrow | Promoted to active roster | | | Before |
| 9/2/2013 | BRK | Stassi | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Federowicz | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Florimon | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Franklin | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Gattis | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Gomez,J | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Lough | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Machi | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Murphy,Do | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Norris,B | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Puig | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Roberts,R | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Shaw | Promoted to active roster | | | Before |
| 9/2/2013 | CAR | Wright,W | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Arias | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Cedeno,R | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Freeman,F | Activated from Injured List | | | Before |
| 9/2/2013 | CIN | Lalli | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Martin,L | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Mejia | Promoted to active roster | | | Before |
| 9/2/2013 | CIN | Salazar | Demoted to reserve roster | | | Before |
| 9/2/2013 | CIN | Tabata | Promoted to active roster | | | Before |
| 9/2/2013 | CIO | Peavy | Demoted to reserve roster | | | Before |
| 9/2/2013 | CIO | Strop | Promoted to active roster | | | Before |
| 9/2/2013 | CTW | Nuno | Demoted to reserve roster | | | Before |
| 9/2/2013 | DLM | Alonso | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Britton | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Chen,W | Activated from Injured List | | | Before |
| 9/2/2013 | DLM | Duensing | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Gindl | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Overbay | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Putnam | Demoted to reserve roster | | | Before |
| 9/2/2013 | DLM | Putnam | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Quiroz | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Ramos,AJ | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Recker | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Uribe | Promoted to active roster | | | Before |
| 9/2/2013 | DLM | Young,E | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Brach | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Broxton | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Calhoun | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Duda | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Duke | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Grandal | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Holt | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | McGee | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Nieuwenhuis | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Sipp | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Turner,Ju | Promoted to active roster | | | Before |
| 9/2/2013 | GAR | Van Slyke | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Arenado | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Beckham,G | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Culberson | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Herrera,J | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Perez,M | Activated from Injured List | | | Before |
| 9/2/2013 | HHR | Pierre | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Pillar | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Santiago,R | Promoted to active roster | | | Before |
| 9/2/2013 | HHR | Venable | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Diekman | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Dolis | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Hand,B | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Mesoraco | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Paredes | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Pena,R | Demoted to reserve roster | | | Before |
| 9/2/2013 | NYD | Pena,R | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Sanabia | Promoted to active roster | | | Before |
| 9/2/2013 | NYD | Worley | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Belisle | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Bourn | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Cowgill | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Estrada | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Hamilton,B | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Nelson,J | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Quintanilla | Promoted to active roster | | | Before |
| 9/2/2013 | RMO | Tazawa | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Axford | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Bass | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Blanco,H | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Gibson | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Haren | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Kotchman | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Luetge | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | McFarland | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Profar | Promoted to active roster | | | Before |
| 9/2/2013 | SOI | Zunino | Promoted to active roster | | | Before |
| 9/3/2013 | BAR | Walker,T | Demoted to reserve roster | | | Before |
| 9/3/2013 | CAR | Beltran | Demoted to reserve roster | | | Before |
| 9/3/2013 | CAR | Infante | Demoted to reserve roster | | | Before |
| 9/3/2013 | CAR | Marshall,S | Demoted to reserve roster | | | Before |
| 9/3/2013 | HAR | Carp | Activated from Injured List | | | Before |
| 9/3/2013 | HAR | Eaton | Promoted to active roster | | | Before |
| 9/3/2013 | HAR | Farquhar | Promoted to active roster | | | Before |
| 9/3/2013 | HAR | Roark | Promoted to active roster | | | Before |
| 9/3/2013 | NEP | Colabello | Promoted to active roster | | | Before |
| 9/3/2013 | NEP | Villar | Demoted to reserve roster | | | Before |
| 9/3/2013 | SOI | Bass | Demoted to reserve roster | | | Before |
| 9/4/2013 | ANN | Myers,W | Demoted to reserve roster | | | Before |
| 9/4/2013 | BAR | Wright,S | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Atchison | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Doubront | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Hafner | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Henderson | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Hughes,P | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Kemp | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Kendrick,K | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Papelbon | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Smyly | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Street | Promoted to active roster | | | Before |
| 9/4/2013 | BBG | Turner,Ja | Promoted to active roster | | | Before |
| 9/4/2013 | BRK | Leon | Demoted to reserve roster | | | Before |
| 9/4/2013 | CEN | Bloomquist | Promoted to active roster | | | Before |
| 9/4/2013 | CEN | Green,N | Demoted to reserve roster | | | Before |
| 9/4/2013 | CIN | Allen | Demoted to reserve roster | | | Before |
| 9/4/2013 | CIN | Webb,R | Promoted to active roster | | | Before |
| 9/4/2013 | RMO | Hamilton,B | Demoted to reserve roster | | | Before |
| 9/5/2013 | ANN | Leake | Demoted to reserve roster | | | Before |
| 9/5/2013 | BAR | Coleman | Promoted to active roster | | | Before |
| 9/5/2013 | BAR | de Aza | Promoted to active roster | | | Before |
| 9/5/2013 | BAR | Gregerson | Demoted to reserve roster | | | Before |
| 9/5/2013 | BAR | Ramirez,Jo | Promoted to active roster | | | Before |
| 9/5/2013 | BAR | Scheppers | Promoted to active roster | | | Before |
| 9/5/2013 | BRK | Johnson,Ro | Promoted to active roster | | | Before |
| 9/5/2013 | BRK | LeBlanc | Promoted to active roster | | | Before |
| 9/5/2013 | GAR | Dyson,J | Promoted to active roster | | | Before |
| 9/5/2013 | GAR | Van Slyke | Demoted to reserve roster | | | Before |
| 9/5/2013 | HHR | Garcia,J | Demoted to reserve roster | | | Before |
| 9/5/2013 | RMO | Breslow | Demoted to reserve roster | | | Before |
| 9/6/2013 | CIO | Ciriaco | Demoted to reserve roster | | | Before |
| 9/6/2013 | CIO | Dirks | Promoted to active roster | | | Before |
| 9/6/2013 | CTW | Qualls | Demoted to reserve roster | | | Before |
| 9/6/2013 | DLM | Ethier | Demoted to reserve roster | | | Before |
| 9/7/2013 | ANN | Chatwood | Demoted to reserve roster | | | Before |
| 9/7/2013 | BBG | Bautista | Activated from Injured List | | | Before |
| 9/7/2013 | CIO | Sucre | Promoted to active roster | | | Before |
| 9/7/2013 | HAR | Gentry | Promoted to active roster | | | Before |
| 9/7/2013 | HAR | Kintzler | Promoted to active roster | | | Before |
| 9/7/2013 | HAR | Phegley | Promoted to active roster | | | Before |
| 9/7/2013 | HAR | Rasmus,Col | Demoted to reserve roster | | | Before |
| 9/7/2013 | HAR | Valencia | Promoted to active roster | | | Before |
| 9/7/2013 | TEW | Rodriguez,A | Activated from Injured List | | | Before |
| 9/7/2013 | TEW | Satin | Demoted to reserve roster | | | Before |
| 9/7/2013 | TEW | Satin | Promoted to active roster | | | Before |
| 9/8/2013 | ANN | Crain | Demoted to reserve roster | | | Before |
| 9/8/2013 | BAR | Byrd | Demoted to reserve roster | | | Before |
| 9/8/2013 | BAR | Ramirez,H | Promoted to active roster | | | Before |
| 9/8/2013 | CEN | Dunn,M | Promoted to active roster | | | Before |
| 9/8/2013 | CEN | Varvaro | Demoted to reserve roster | | | Before |
| 9/8/2013 | NEP | Centeno | Promoted to active roster | | | Before |
| 9/8/2013 | NEP | Dietrich | Promoted to active roster | | | Before |
| 9/8/2013 | NEP | Fields | Promoted to active roster | | | Before |
| 9/8/2013 | NEP | Reimold | Promoted to active roster | | | Before |
| 9/8/2013 | SOI | Gibson | Demoted to reserve roster | | | Before |
| 9/8/2013 | TEW | Andino | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Collmenter | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Freiman | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Gonzalez,C | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Hoover | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Nix,J | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Sanchez,T | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Teagarden | Promoted to active roster | | | Before |
| 9/8/2013 | TEW | Vogt | Promoted to active roster | | | Before |
| 9/9/2013 | ANN | Fernandez | Demoted to reserve roster | | | Before |
| 9/9/2013 | BRK | Bernier | Promoted to active roster | | | Before |
| 9/9/2013 | BRK | d'Arnaud | Promoted to active roster | | | Before |
| 9/9/2013 | BRK | Hicks | Promoted to active roster | | | Before |
| 9/9/2013 | BRK | Porcello | Demoted to reserve roster | | | Before |
| 9/9/2013 | BRK | Rusin | Promoted to active roster | | | Before |
| 9/9/2013 | BRK | Smoak | Promoted to active roster | | | Before |
| 9/9/2013 | BRK | Workman | Promoted to active roster | | | Before |
| 9/9/2013 | FDH | Strasburg | Promoted to active roster | | | Before |
| 9/9/2013 | GAR | McGee | Demoted to reserve roster | | | Before |
| 9/11/2013 | ANN | Shields | Demoted to reserve roster | | | Before |
| 9/11/2013 | CAR | Asche | Promoted to active roster | | | Before |
| 9/11/2013 | CIO | Grimm | Demoted to reserve roster | | | Before |
| 9/11/2013 | CIO | Uggla | Activated from Injured List | | | Before |
| 9/11/2013 | GAR | Duke | Demoted to reserve roster | | | Before |
| 9/11/2013 | RMO | Descalso | Promoted to active roster | | | Before |
| 9/11/2013 | RMO | Holaday | Promoted to active roster | | | Before |
| 9/11/2013 | RMO | Stanton | Demoted to reserve roster | | | Before |
| 9/11/2013 | RMO | Thole | Promoted to active roster | | | Before |
| 9/12/2013 | BRK | Stassi | Demoted to reserve roster | | | Before |
| 9/12/2013 | CSS | Torres,C | Demoted to reserve roster | | | Before |
| 9/12/2013 | GAR | Broxton | Demoted to reserve roster | | | Before |
| 9/12/2013 | SOI | Howard | Demoted to reserve roster | | | Before |
| 9/13/2013 | ANN | Robertson,D | Demoted to reserve roster | | | Before |
| 9/13/2013 | CIN | Mejia | Demoted to reserve roster | | | Before |
| 9/13/2013 | CIN | Sanchez,Ani | Demoted to reserve roster | | | Before |
| 9/13/2013 | CIO | Keuchel | Promoted to active roster | | | Before |
| 9/13/2013 | CSS | Soria | Promoted to active roster | | | Before |
| 9/13/2013 | CSS | Thornton | Promoted to active roster | | | Before |
| 9/13/2013 | FDH | Doolittle | Demoted to reserve roster | | | Before |
| 9/13/2013 | FDH | Uehara | Demoted to reserve roster | | | Before |
| 9/13/2013 | NEP | Russell | Demoted to reserve roster | | | Before |
| 9/14/2013 | GAR | Affeldt | Demoted to reserve roster | | | Before |
| 9/14/2013 | GAR | Ross,T | Demoted to reserve roster | | | Before |
| 9/14/2013 | GAR | Santana,E | Promoted to active roster | | | Before |
| 9/14/2013 | SOI | McFarland | Demoted to reserve roster | | | Before |
| 9/15/2013 | CEN | Bastardo | Promoted to active roster | | | Before |
| 9/15/2013 | CEN | Cishek | Demoted to reserve roster | | | Before |
| 9/15/2013 | CEN | Cook | Promoted to active roster | | | Before |
| 9/15/2013 | CEN | Petricka | Promoted to active roster | | | Before |
| 9/15/2013 | CEN | Tejada,M | Promoted to active roster | | | Before |
| 9/15/2013 | CSS | Gimenez,H | Demoted to reserve roster | | | Before |
| 9/15/2013 | NEP | den Dekker | Promoted to active roster | | | Before |
| 9/15/2013 | NEP | Morales,F | Promoted to active roster | | | Before |
| 9/15/2013 | NEP | Wilson,A | Promoted to active roster | | | Before |
| 9/15/2013 | NYD | Blanton | Demoted to reserve roster | | | Before |
| 9/15/2013 | NYD | Dolis | Demoted to reserve roster | | | Before |
| 9/15/2013 | NYD | Harper | Demoted to reserve roster | | | Before |
| 9/15/2013 | NYD | Richard | Demoted to reserve roster | | | Before |
| 9/15/2013 | SOI | de la Rosa,J | Promoted to active roster | | | Before |
| 9/15/2013 | SOI | Garcia,Le | Demoted to reserve roster | | | Before |
| 9/15/2013 | TEW | Hoover | Demoted to reserve roster | | | Before |
| 9/16/2013 | CIO | Bailey,A | Demoted to reserve roster | | | Before |
| 9/16/2013 | CIO | Blazek | Promoted to active roster | | | Before |
| 9/16/2013 | CIO | Capps | Promoted to active roster | | | Before |
| 9/16/2013 | CSS | Solano,J | Promoted to active roster | | | Before |
| 9/16/2013 | FDH | Cashner | Demoted to reserve roster | | | Before |
| 9/16/2013 | GAR | Arrieta | Promoted to active roster | | | Before |
| 9/16/2013 | GAR | Wood,A | Demoted to reserve roster | | | Before |
| 9/16/2013 | HHR | Matusz | Demoted to reserve roster | | | Before |
| 9/16/2013 | SOI | Luetge | Demoted to reserve roster | | | Before |
| 9/16/2013 | SOI | Pence | Demoted to reserve roster | | | Before |
| 9/16/2013 | SOI | Valverde | Demoted to reserve roster | | | Before |
| 9/17/2013 | BAR | Alvarez,H | Promoted to active roster | | | Before |
| 9/17/2013 | BAR | Laird,G | Promoted to active roster | | | Before |
| 9/17/2013 | BAR | Lavarnway | Promoted to active roster | | | Before |
| 9/17/2013 | BAR | Ramirez,Jo | Demoted to reserve roster | | | Before |
| 9/17/2013 | CEN | Oberholtzer | Demoted to reserve roster | | | Before |
| 9/17/2013 | CIN | Wright,J | Promoted to active roster | | | Before |
| 9/17/2013 | DLM | Ramos,AJ | Demoted to reserve roster | | | Before |
| 9/17/2013 | FDH | Beachy | Promoted to active roster | | | Before |
| 9/17/2013 | NEP | den Dekker | Demoted to reserve roster | | | Before |
| 9/17/2013 | NEP | den Dekker | Promoted to active roster | | | Before |
| 9/18/2013 | CAR | Beltran | Promoted to active roster | | | Before |
| 9/18/2013 | CAR | Gimenez,C | Promoted to active roster | | | Before |
| 9/18/2013 | CAR | Infante | Promoted to active roster | | | Before |
| 9/18/2013 | CAR | McCann | Demoted to reserve roster | | | Before |
| 9/18/2013 | CEN | DeJesus | Promoted to active roster | | | Before |
| 9/18/2013 | CEN | Gose | Demoted to reserve roster | | | Before |
| 9/18/2013 | CEN | Gose | Promoted to active roster | | | Before |
| 9/18/2013 | CIN | Albers,A | Promoted to active roster | | | Before |
| 9/18/2013 | CIN | Perez,O | Demoted to reserve roster | | | Before |
| 9/18/2013 | CSS | Gimenez,H | Demoted to reserve roster | | | Before |
| 9/18/2013 | CSS | Gimenez,H | Promoted to active roster | | | Before |
| 9/18/2013 | HHR | Chapman,A | Demoted to reserve roster | | | Before |
| 9/18/2013 | SOI | Semien | Demoted to reserve roster | | | Before |
| 9/19/2013 | ANN | Chapman,K | Demoted to reserve roster | | | Before |
| 9/19/2013 | ANN | Holland,G | Demoted to reserve roster | | | Before |
| 9/19/2013 | ANN | Napoli | Activated from Injured List | | | Before |
| 9/19/2013 | GAR | Neshek | Demoted to reserve roster | | | Before |
| 9/19/2013 | HAR | Harris,W | Promoted to active roster | | | Before |
| 9/19/2013 | HAR | Vincent | Demoted to reserve roster | | | Before |
| 9/19/2013 | RMO | Cowgill | Demoted to reserve roster | | | Before |
| 9/19/2013 | RMO | Kinsler | Demoted to reserve roster | | | Before |
| 9/19/2013 | TEW | Vogt | Demoted to reserve roster | | | Before |
| 9/20/2013 | CAR | Beltran | Demoted to reserve roster | | | Before |
| 9/20/2013 | HHR | Sweeney | Demoted to reserve roster | | | Before |
| 9/20/2013 | RMO | Jansen | Demoted to reserve roster | | | Before |
| 9/20/2013 | TEW | Heyward | Demoted to reserve roster | | | Before |
| 9/21/2013 | CIN | Getz | Promoted to active roster | | | Before |
| 9/21/2013 | CIN | Maxwell | Promoted to active roster | | | Before |
| 9/21/2013 | CIN | Miller,A | Demoted to reserve roster | | | Before |
| 9/21/2013 | CIN | Scott | Promoted to active roster | | | Before |
| 9/21/2013 | CIN | Sierra | Promoted to active roster | | | Before |
| 9/21/2013 | CIN | Young,M | Promoted to active roster | | | Before |
| 9/21/2013 | HHR | Raley | Promoted to active roster | | | Before |
| 9/21/2013 | SOI | Haren | Demoted to reserve roster | | | Before |
| 9/21/2013 | SOI | Lester | Demoted to reserve roster | | | Before |
| 9/21/2013 | SOI | Maldonado | Demoted to reserve roster | | | Before |
| 9/21/2013 | SOI | Maldonado | Promoted to active roster | | | Before |
| 9/21/2013 | SOI | Peralta,Jh | Activated from Injured List | | | Before |
| 9/21/2013 | SOI | Stammen | Promoted to active roster | | | Before |
| 9/21/2013 | SOI | Zunino | Demoted to reserve roster | | | Before |
| 9/21/2013 | TEW | Gallardo | Demoted to reserve roster | | | Before |
| 9/22/2013 | BAR | Happ | Promoted to active roster | | | Before |
| 9/22/2013 | BAR | Wright,S | Demoted to reserve roster | | | Before |
| 9/22/2013 | BRK | Hughes,J | Demoted to reserve roster | | | Before |
| 9/22/2013 | BRK | Johnson,Ro | Demoted to reserve roster | | | Before |
| 9/22/2013 | BRK | LeMahieu | Promoted to active roster | | | Before |
| 9/22/2013 | BRK | Molina,J | Promoted to active roster | | | Before |
| 9/22/2013 | BRK | Parker,B | Promoted to active roster | | | Before |
| 9/22/2013 | BRK | Ryu | Promoted to active roster | | | Before |
| 9/22/2013 | CIN | Perez,S | Demoted to reserve roster | | | Before |
| 9/22/2013 | CSS | Francoeur | Demoted to reserve roster | | | Before |
| 9/22/2013 | DLM | Smith,S | Demoted to reserve roster | | | Before |
| 9/22/2013 | FDH | Ellis,AJ | Demoted to reserve roster | | | Before |
| 9/22/2013 | FDH | Parker,J | Promoted to active roster | | | Before |
| 9/22/2013 | HAR | Eaton | Demoted to reserve roster | | | Before |
| 9/22/2013 | HAR | Kratz | Promoted to active roster | | | Before |
| 9/24/2013 | CAR | Puig | Demoted to reserve roster | | | Before |
| 9/24/2013 | CEN | Dickey | Demoted to reserve roster | | | Before |
| 9/24/2013 | CIN | Gaudin | Promoted to active roster | | | Before |
| 9/24/2013 | CIN | Mejia | Promoted to active roster | | | Before |
| 9/24/2013 | CIN | Sanchez,Ani | Demoted to reserve roster | | | Before |
| 9/24/2013 | CIN | Sanchez,Ani | Promoted to active roster | | | Before |
| 9/24/2013 | CIO | Gordon,D | Promoted to active roster | | | Before |
| 9/24/2013 | DLM | Jepsen | Demoted to reserve roster | | | Before |
| 9/24/2013 | DLM | Volquez | Demoted to reserve roster | | | Before |
| 9/24/2013 | FDH | Soto,G | Promoted to active roster | | | Before |
| 9/24/2013 | HHR | Kershaw | Demoted to reserve roster | | | Before |
| 9/24/2013 | NYD | Lyles | Demoted to reserve roster | | | Before |
| 9/24/2013 | NYD | Sanabia | Demoted to reserve roster | | | Before |
| 9/24/2013 | RMO | Desmond | Demoted to reserve roster | | | Before |
| 9/24/2013 | RMO | Desmond | Promoted to active roster | | | Before |
| 9/24/2013 | SOI | Bourgeois | Demoted to reserve roster | | | Before |
| 9/24/2013 | SOI | Granderson | Promoted to active roster | | | Before |
| 9/24/2013 | SOI | Zunino | Promoted to active roster | | | Before |
| 9/25/2013 | ANN | Scutaro | Demoted to reserve roster | | | Before |
| 9/25/2013 | BBG | Morse | Activated from Injured List | | | Before |
| 9/25/2013 | CAR | Carpenter,DD | Promoted to active roster | | | Before |
| 9/25/2013 | CAR | Donaldson | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Fister | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Goldschmidt | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Infante | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Kuroda | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Lowrie | Demoted to reserve roster | | | Before |
| 9/25/2013 | CAR | Rosenthal | Promoted to active roster | | | Before |
| 9/25/2013 | CIO | Coghlan | Promoted to active roster | | | Before |
| 9/25/2013 | CIO | McDonald,Jo | Demoted to reserve roster | | | Before |
| 9/25/2013 | CSS | Forsythe | Promoted to active roster | | | Before |
| 9/25/2013 | CSS | Hairston,J | Demoted to reserve roster | | | Before |
| 9/25/2013 | CSS | Ramirez,Ar | Promoted to active roster | | | Before |
| 9/25/2013 | GAR | Arrieta | Demoted to reserve roster | | | Before |
| 9/25/2013 | GAR | Dyson,J | Demoted to reserve roster | | | Before |
| 9/25/2013 | GAR | Richards | Promoted to active roster | | | Before |
| 9/25/2013 | GAR | Sipp | Demoted to reserve roster | | | Before |
| 9/25/2013 | HAR | Cabrera,Mi | Demoted to reserve roster | | | Before |
| 9/25/2013 | NEP | Willingham | Demoted to reserve roster | | | Before |
| 9/26/2013 | CAR | Gimenez,C | Demoted to reserve roster | | | Before |
| 9/26/2013 | CIN | Burnett,AJ | Demoted to reserve roster | | | Before |
| 9/26/2013 | CSS | Young,D | Demoted to reserve roster | | | Before |
| 9/26/2013 | CTW | Iwakuma | Demoted to reserve roster | | | Before |
| 9/26/2013 | CTW | Jenkins | Promoted to active roster | | | Before |
| 9/26/2013 | CTW | Nuno | Promoted to active roster | | | Before |
| 9/26/2013 | DLM | Lackey | Demoted to reserve roster | | | Before |
| 9/26/2013 | HAR | Navarro,D | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Carpenter,M | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Coleman | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Corbin | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Hawkins | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Otero | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Perez,JP | Demoted to reserve roster | | | Before |
| 9/27/2013 | BAR | Wacha | Promoted to active roster | | | Before |
| 9/27/2013 | BAR | Watson | Demoted to reserve roster | | | Before |
| 9/27/2013 | BRK | Workman | Demoted to reserve roster | | | Before |
| 9/27/2013 | CEN | Bethancourt | Promoted to active roster | | | Before |
| 9/27/2013 | CEN | Molina,Y | Demoted to reserve roster | | | Before |
| 9/27/2013 | CEN | Quintero | Promoted to active roster | | | Before |
| 9/27/2013 | CIN | Sanchez,Ani | Promoted to active roster | | | Before |
| 9/27/2013 | CSS | Bradley | Promoted to active roster | | | Before |
| 9/27/2013 | RMO | Pomeranz | Promoted to active roster | | | Before |
| 9/27/2013 | SOI | Axford | Demoted to reserve roster | | | Before |
| 9/27/2013 | SOI | Brasier | Demoted to reserve roster | | | Before |
| 9/27/2013 | SOI | Brasier | Promoted to active roster | | | Before |
| 9/27/2013 | SOI | Hunter,Tom | Promoted to active roster | | | Before |
| 9/27/2013 | SOI | Pressly | Promoted to active roster | | | Before |
| 9/27/2013 | TEW | Archer | Demoted to reserve roster | | | Before |
| 9/27/2013 | TEW | Mazzaro | Promoted to active roster | | | Before |
| 9/27/2013 | TEW | Veras | Promoted to active roster | | | Before |
| 9/27/2013 | TEW | Wheeler,Z | Promoted to active roster | | | Before |
| 9/28/2013 | ANN | Bourjos | Activated from Injured List | | | Before |
| 9/28/2013 | BBG | Atchison | Demoted to reserve roster | | | Before |
| 9/28/2013 | CEN | Bailey,H | Demoted to reserve roster | | | Before |
| 9/28/2013 | CIN | Sanchez,Ani | Demoted to reserve roster | | | Before |
| 9/28/2013 | NYD | Harper | Promoted to active roster | | | Before |
| 9/28/2013 | NYD | Pena,R | Promoted to active roster | | | Before |
| 9/28/2013 | RMO | Reddick | Demoted to reserve roster | | | Before |
| 9/29/2013 | BBG | Weaver | Demoted to reserve roster | | | Before |
| 9/29/2013 | CEN | Trout | Demoted to reserve roster | | | Before |
| 9/29/2013 | CIN | Allen | Promoted to active roster | | | Before |
| 9/29/2013 | CIN | Feldman | Demoted to reserve roster | | | Before |
| 9/29/2013 | CIN | Grilli | Promoted to active roster | | | Before |
| 9/29/2013 | CIN | LeCure | Promoted to active roster | | | Before |
| 9/29/2013 | CSS | Flowers | Demoted to reserve roster | | | Before |
| 9/29/2013 | DLM | Duensing | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Beachy | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Benoit | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Boxberger | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Burton | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Butler,K | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Cain,M | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Carrasco | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Cervelli | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Cumpton | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Gomez,C | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Gordon,A | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Gosewisch | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Hill,A | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Kendrick,H | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | McHugh | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Milone | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Peralta,Jo | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Presley | Promoted to active roster | | | Before |
| 9/29/2013 | FDH | Ramos,W | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Strasburg | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Upton,J | Demoted to reserve roster | | | Before |
| 9/29/2013 | FDH | Wilson,B | Demoted to reserve roster | | | Before |
| 9/29/2013 | HAR | Melancon | Demoted to reserve roster | | | Before |
| 9/29/2013 | HAR | Torres,Al | Demoted to reserve roster | | | Before |
| 9/29/2013 | NYD | Hand,B | Demoted to reserve roster | | | Before |
| 9/29/2013 | RMO | Davis,R | Demoted to reserve roster | | | Before |