| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/11/2015 | SOI | McGehee | Promoted to active roster | | | Before |
| 4/11/2015 | SOI | Wong | Placed on Injured List | | 4/11/2015 | Before |
| 4/12/2015 | BRK | Petit,Y | Promoted to active roster | | | Before |
| 4/12/2015 | BRK | Ray | Placed on Injured List | | 4/12/2015 | Before |
| 4/14/2015 | RMO | Beckham,G | Promoted to active roster | | | Before |
| 4/14/2015 | RMO | Gallo | Placed on Injured List | | 4/13/2015 | Before |
| 4/18/2015 | CIO | Casali | Promoted to active roster | | | Before |
| 4/18/2015 | CIO | Montero,M | Placed on Injured List | | 4/17/2015 | Before |
| 4/20/2015 | CSS | Alexander | Demoted to reserve roster | | | Before |
| 4/20/2015 | CSS | Torres,C | Promoted to active roster | | | Before |
| 4/20/2015 | HAR | Grandal | Placed on Injured List | | 4/20/2015 | Before |
| 4/20/2015 | HAR | Navarro,D | Promoted to active roster | | | Before |
| 4/21/2015 | RMO | Kepler | Demoted to reserve roster | | | Before |
| 4/21/2015 | RMO | Utley | Promoted to active roster | | | Before |
| 4/23/2015 | RMO | Callaspo | Promoted to active roster | | | Before |
| 4/23/2015 | RMO | Gardner | Placed on Injured List | | 4/22/2015 | Before |
| 4/24/2015 | CSS | Dull | Demoted to reserve roster | | | Before |
| 4/24/2015 | CSS | Jeffress | Promoted to active roster | | | Before |
| 4/24/2015 | FDH | Doolittle | Demoted to reserve roster | | | Before |
| 4/24/2015 | FDH | Rodriguez,Fe | Promoted to active roster | | | Before |
| 4/26/2015 | CSS | Johnson,J | Promoted to active roster | | | Before |
| 4/26/2015 | CSS | Reed,A | Placed on Injured List | | 4/24/2015 | Before |
| 4/26/2015 | HAR | Pearce | Promoted to active roster | | | Before |
| 4/26/2015 | HAR | Wright,D | Placed on Injured List | | 4/26/2015 | Before |
| 4/28/2015 | BRK | Aviles | Promoted to active roster | | | Before |
| 4/28/2015 | BRK | Correa | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Hamilton,B | Promoted to active roster | | | Before |
| 4/28/2015 | BRK | Hedges | Promoted to active roster | | | Before |
| 4/28/2015 | BRK | Iannetta | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Infante | Promoted to active roster | | | Before |
| 4/28/2015 | BRK | Joyce | Placed on Injured List | | 4/27/2015 | Before |
| 4/28/2015 | BRK | Kendrick,K | Promoted to active roster | | | Before |
| 4/28/2015 | BRK | Osuna | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Paxton | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Ray | Activated from Injured List | | | Before |
| 4/28/2015 | BRK | Smoak | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Stanton | Demoted to reserve roster | | | Before |
| 4/28/2015 | BRK | Yates | Promoted to active roster | | | Before |
| 4/29/2015 | SOI | McGehee | Demoted to reserve roster | | | Before |
| 4/29/2015 | SOI | Wong | Activated from Injured List | | | Before |
| 4/30/2015 | CIO | Casali | Placed on Injured List | | 4/30/2015 | Before |
| 4/30/2015 | CIO | Murphy,J | Promoted to active roster | | | Before |
| 5/2/2015 | CIO | Montero,M | Activated from Injured List | | | Before |
| 5/2/2015 | CIO | Murphy,J | Demoted to reserve roster | | | Before |
| 5/3/2015 | CSS | Broxton,J | Promoted to active roster | | | Before |
| 5/3/2015 | CSS | Sabathia | Promoted to active roster | | | Before |
| 5/3/2015 | CSS | Thornburg | Demoted to reserve roster | | | Before |
| 5/3/2015 | CSS | Wood,A | Placed on Injured List | | 5/3/2015 | Before |