| Transactions | ||||||
| Date | Team | Player | Type | OthTm | EffDate | When |
| 3/11/1988 | COP | Brett | Acquired via trade | CRH | After | |
| 3/11/1988 | COP | Buhner | Traded away | CRH | After | |
| 3/11/1988 | CRH | Brett | Traded away | COP | After | |
| 3/11/1988 | CRH | Buhner | Acquired via trade | COP | After | |
| 10/13/1988 | COL | Candelaria | Demoted to reserve roster | Before | ||
| 10/13/1988 | COP | Perez | Demoted to reserve roster | Before | ||
| 1/1/2024 | EDG | Freeman | Traded away | CCL | After | |
| 1/1/2024 | EDG | Gallego | Acquired via trade | CCL | After | |