| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/2/1986 | HNT | Kennedy | Promoted to active roster | | | Before |
| 4/2/1986 | HNT | White,D | Demoted to reserve roster | | | Before |
| 4/2/1986 | NJD | Hernandez,K | Promoted to active roster | | | Before |
| 4/2/1986 | NJD | McGriff | Demoted to reserve roster | | | Before |
| 4/2/1986 | RIN | Eichhorn | Placed on Injured List | | 4/2/1986 | Before |
| 4/2/1986 | RIN | Tekulve | Promoted to active roster | | | Before |
| 4/3/1986 | AVI | Hrbek | Promoted to active roster | | | Before |
| 4/3/1986 | AVI | Kingery | Demoted to reserve roster | | | Before |
| 4/5/1986 | HNT | Kennedy | Demoted to reserve roster | | | Before |
| 4/5/1986 | HNT | White,D | Promoted to active roster | | | Before |
| 4/11/1986 | NJD | Tolleson | Demoted to reserve roster | | | Before |
| 4/11/1986 | NJD | Valle | Promoted to active roster | | | Before |
| 4/12/1986 | NJD | Harper,B | Promoted to active roster | | | Before |
| 4/12/1986 | NJD | Valle | Demoted to reserve roster | | | Before |
| 4/14/1986 | NJD | Harper,B | Demoted to reserve roster | | | Before |
| 4/14/1986 | NJD | Tolleson | Promoted to active roster | | | Before |
| 4/14/1986 | ROC | Blue | Promoted to active roster | | | Before |
| 4/14/1986 | ROC | Niekro,P | Placed on Injured List | | 4/12/1986 | Before |
| 4/18/1986 | HNT | Browne | Demoted to reserve roster | | | Before |
| 4/18/1986 | HNT | Kennedy | Promoted to active roster | | | Before |
| 4/18/1986 | RIN | Eichhorn | Activated from Injured List | | | Before |
| 4/18/1986 | RIN | Tekulve | Demoted to reserve roster | | | Before |
| 4/22/1986 | AVI | Concepcion | Promoted to active roster | | | Before |
| 4/22/1986 | AVI | Salazar,Ar | Demoted to reserve roster | | | Before |
| 4/24/1986 | AVI | Boever | Demoted to reserve roster | | | Before |
| 4/24/1986 | AVI | Ontiveros | Promoted to active roster | | | Before |
| 4/27/1986 | ROC | Thon | Placed on Injured List | | 4/24/1986 | Before |
| 4/27/1986 | ROC | Washington,UL | Promoted to active roster | | | Before |
| 4/30/1986 | NJD | Dawley | Promoted to active roster | | | Before |
| 4/30/1986 | NJD | Welch | Placed on Injured List | | 4/30/1986 | Before |
| 5/1/1986 | QME | Fielder | Demoted to reserve roster | | | Before |
| 5/1/1986 | QME | Upshaw | Promoted to active roster | | | Before |
| 5/2/1986 | ROC | Blue | Demoted to reserve roster | | | Before |
| 5/2/1986 | ROC | Niekro,P | Activated from Injured List | | | Before |
| 5/2/1986 | SAN | Collins | Demoted to reserve roster | | | Before |
| 5/2/1986 | SAN | Hubbard | Promoted to active roster | | | Before |
| 5/2/1986 | SAN | Little | Demoted to reserve roster | | | Before |
| 5/2/1986 | SAN | Williams,K | Promoted to active roster | | | Before |
| 5/3/1986 | QME | Larkin | Demoted to reserve roster | | | Before |
| 5/3/1986 | QME | Riles | Promoted to active roster | | | Before |
| 5/5/1986 | NJD | Berenguer | Demoted to reserve roster | | | Before |
| 5/5/1986 | NJD | Sebra | Promoted to active roster | | | Before |
| 5/5/1986 | RIN | Pasqua | Promoted to active roster | | | Before |
| 5/5/1986 | TWP | Andersen | Promoted to active roster | | | Before |
| 5/5/1986 | TWP | Maddux,G | Demoted to reserve roster | | | Before |
| 5/6/1986 | RIN | Grubb | Demoted to reserve roster | | | Before |
| 5/6/1986 | RIN | Hassey | Placed on Injured List | | 5/6/1986 | Before |
| 5/6/1986 | RIN | Ortiz | Promoted to active roster | | | Before |
| 5/9/1986 | RIN | Bochy | Promoted to active roster | | | Before |
| 5/9/1986 | RIN | Santiago | Demoted to reserve roster | | | Before |
| 5/11/1986 | ROC | Thon | Activated from Injured List | | | Before |
| 5/11/1986 | ROC | Washington,UL | Demoted to reserve roster | | | Before |
| 5/12/1986 | RIN | Farr | Demoted to reserve roster | | | Before |
| 5/12/1986 | RIN | Tekulve | Promoted to active roster | | | Before |