| Transactions | ||||||
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/16/1989 | BON | Anderson | Demoted to reserve roster | Before | ||
| 4/16/1989 | BON | Armas | Released | Before | ||
| 4/16/1989 | BON | Sosa | Demoted to reserve roster | Before | ||
| 4/28/1989 | OTR | Bell | Demoted to reserve roster | Before | ||
| 4/28/1989 | OTR | Bell | Promoted to active roster | Before | ||
| 4/28/1989 | OTR | Bell | Demoted to reserve roster | Before | ||
| 4/28/1989 | OTR | Belle | Demoted to reserve roster | Before | ||
| 4/28/1989 | OTR | Owen | Demoted to reserve roster | Before | ||
| 4/28/1989 | Pal | Brantley | Demoted to reserve roster | Before | ||
| 5/3/1989 | GEO | Sierra | Acquired via trade | KDB | After | |
| 5/3/1989 | GEO | Vizquel | Traded away | KDB | After | |
| 5/3/1989 | KDB | Sierra | Traded away | GEO | After | |
| 5/3/1989 | KDB | Vizquel | Acquired via trade | GEO | After | |
| 5/9/1989 | MUL | Roomes | Traded away | WIZ | After | |
| 5/9/1989 | MUL | Tudor | Acquired via trade | WIZ | After | |
| 5/9/1989 | WIZ | Roomes | Acquired via trade | MUL | After | |
| 5/9/1989 | WIZ | Tudor | Traded away | MUL | After | |
| 5/16/1989 | COL | McWilliams | Demoted to reserve roster | Before | ||
| 5/16/1989 | COL | Sanderson | Promoted to active roster | Before | ||
| 5/16/1989 | MUL | Moseby | Promoted to active roster | Before | ||
| 6/2/1989 | CCL | Dopson | Acquired via trade | LON | After | |
| 6/2/1989 | CCL | Freeman | Traded away | LON | After | |
| 6/2/1989 | LON | Dopson | Traded away | CCL | After | |
| 6/2/1989 | LON | Freeman | Acquired via trade | CCL | After | |
| 6/3/1989 | CCL | Kramer | Demoted to reserve roster | Before | ||
| 6/3/1989 | LON | Birtsas | Promoted to active roster | Before | ||
| 6/27/1989 | GEO | Lemon | Demoted to reserve roster | Before | ||
| 7/2/1989 | GEO | Boyd | Traded away | KDB | After | |
| 7/2/1989 | GEO | Ramos | Acquired via trade | KDB | After | |
| 7/2/1989 | KDB | Boyd | Acquired via trade | GEO | After | |
| 7/2/1989 | KDB | Ramos | Traded away | GEO | After | |
| 7/3/1989 | GEO | Liriano | Demoted to reserve roster | Before | ||
| 7/9/1989 | CCL | Stubbs | Demoted to reserve roster | Before | ||
| 7/20/1989 | CRH | Slaught | Acquired via trade | GEO | After | |
| 7/20/1989 | CRH | Smith,D | Traded away | GEO | After | |
| 7/20/1989 | GEO | Slaught | Traded away | CRH | After | |
| 7/20/1989 | GEO | Smith,D | Acquired via trade | CRH | After | |
| 7/21/1989 | GEO | Dwyer | Demoted to reserve roster | Before | ||
| 8/1/1989 | CRH | Benes | Acquired via trade | Pal | After | |
| 8/1/1989 | CRH | Daniels | Acquired via trade | Pal | After | |
| 8/1/1989 | CRH | Fraser | Traded away | Pal | After | |
| 8/1/1989 | CRH | Saberhagen | Traded away | Pal | After | |
| 8/1/1989 | Pal | Benes | Traded away | CRH | After | |
| 8/1/1989 | Pal | Daniels | Traded away | CRH | After | |
| 8/1/1989 | Pal | Fraser | Acquired via trade | CRH | After | |
| 8/1/1989 | Pal | Saberhagen | Acquired via trade | CRH | After | |
| 8/2/1989 | COP | Hibbard | Promoted to active roster | Before | ||
| 8/2/1989 | COP | Rogers | Demoted to reserve roster | Before | ||
| 8/2/1989 | ROK | Gonzales | Demoted to reserve roster | Before | ||
| 8/2/1989 | ROK | Kittle | Demoted to reserve roster | Before | ||
| 8/2/1989 | TON | Aldrete | Demoted to reserve roster | Before | ||
| 8/2/1989 | WIZ | Carter | Demoted to reserve roster | Before | ||
| 8/2/1989 | WIZ | Hassey | Signed | Before | ||
| 8/2/1989 | WIZ | Kingery | Demoted to reserve roster | Before | ||
| 1/29/2024 | CRH | Ray | Traded away | Pal | After | |
| 1/29/2024 | CRH | Smith,D | Acquired via trade | Pal | After | |
| 1/29/2024 | Pal | Ray | Acquired via trade | CRH | After | |
| 1/29/2024 | Pal | Smith,D | Traded away | CRH | After | |