SPB In Season Free Agency -- Seasons Past Baseball
Regular season
| Transactions |
| Seq | Date | Team | Player | Type |
| 0 | 5/13/1987 | HAT | Barker | Released |
| 0 | 5/13/1987 | HAT | Zuvella | Signed |
| 0 | 5/20/1987 | FRA | Lopes | Released |
| 0 | 5/20/1987 | IAC | Hairston | Signed |
| 0 | 5/20/1987 | IAC | Vande Berg | Released |
| 0 | 5/20/1987 | OTT | Haas | Signed |
| 0 | 5/20/1987 | ROC | Cowley | Released |
| 0 | 5/20/1987 | ROC | Ryal | Signed |
| 0 | 5/26/1987 | HAT | Arnold | Released |
| 0 | 5/26/1987 | HAT | Van Gorder | Released |
| 0 | 5/26/1987 | HAT | Van Gorder | Signed |
| 0 | 5/26/1987 | HAT | Vande Berg | Signed |
| 0 | 6/2/1987 | FLU | Landreaux | Signed |
| 0 | 6/2/1987 | FLU | Nettles | Signed |
| 0 | 6/2/1987 | FLU | Nielsen | Signed |
| 0 | 6/2/1987 | FLU | Paciorek | Released |
| 0 | 6/2/1987 | FLU | Trujillo | Released |
| 0 | 6/2/1987 | FLU | Wynegar | Released |
| 0 | 6/2/1987 | OTT | Heep | Signed |
| 0 | 6/2/1987 | OTT | Milner | Released |
| 0 | 6/7/1987 | CAR | Bailey | Signed |
| 0 | 6/7/1987 | CAR | Garner | Released |
| 0 | 6/28/1987 | FLU | Bochy | Signed |
| 0 | 6/28/1987 | FLU | Loynd | Released |
| 0 | 7/4/1987 | EBS | Sheaffer | Signed |
| 0 | 7/4/1987 | EBS | Walker | Released |
| 0 | 7/4/1987 | IAC | Heathcock | Released |
| 0 | 7/4/1987 | IAC | Meads | Signed |
| 0 | 7/9/1987 | ROC | Shirley | Signed |
| 0 | 7/11/1987 | OTT | Conroy | Released |
| 0 | 7/11/1987 | OTT | Conroy | Signed |
| 1 | 7/11/1987 | OTT | Conroy | Signed |
| 0 | 7/11/1987 | OTT | Haas | Released |
| 1 | 7/11/1987 | OTT | Haas | Released |
| 0 | 7/11/1987 | OTT | Haas | Signed |
| 0 | 7/17/1987 | BRM | Collins | Released |
| 0 | 7/17/1987 | BRM | Lopes | Signed |
| 0 | 7/17/1987 | FLU | Garner | Signed |
| 0 | 7/17/1987 | FLU | Nunez | Released |
| 0 | 7/24/1987 | BRM | Green | Signed |
| 0 | 7/24/1987 | COL | Grubb | Released |
| 0 | 7/24/1987 | COL | Polidor | Signed |
| 0 | 7/24/1987 | HAT | Davis | Released |
| 0 | 7/24/1987 | HAT | Lavelle | Signed |
| 0 | 7/24/1987 | HAT | Rodriguez | Signed |
| 0 | 7/24/1987 | HAT | Youngblood | Released |
| 0 | 7/24/1987 | SMV | Henry | Released |
| 0 | 7/30/1987 | BHS | Destrade | Released |
| 0 | 7/30/1987 | FLU | Marzano | Released |
| 0 | 7/30/1987 | FLU | Nichols | Signed |
| 0 | 7/30/1987 | IAC | Sakata | Signed |
| 0 | 8/6/1987 | CRF | Lacy | Released |
| 0 | 8/6/1987 | CRF | Stone | Signed |
| 0 | 8/6/1987 | EBS | Calhoun | Released |
| 0 | 8/6/1987 | EBS | Gorman | Signed |
| 0 | 8/6/1987 | EBS | Noboa | Signed |
| 0 | 8/6/1987 | EBS | Porter | Released |
| 0 | 8/12/1987 | COL | Andujar | Released |
| 0 | 8/12/1987 | COL | Stefero | Signed |
| 0 | 8/17/1987 | OTT | Bordi | Signed |
| 0 | 8/17/1987 | OTT | Conroy | Released |
| 0 | 8/17/1987 | OTT | Heep | Released |
| 0 | 8/17/1987 | OTT | Landrum | Signed |
| 0 | 8/17/1987 | OTT | Ramsey | Signed |
| 0 | 8/17/1987 | OTT | Romero | Released |
| 0 | 8/19/1987 | OTT | Bordi | Signed |
| 0 | 8/19/1987 | OTT | Conroy | Released |
| 0 | 8/19/1987 | OTT | Heep | Released |
| 0 | 8/19/1987 | OTT | Landrum | Signed |
| 0 | 8/19/1987 | OTT | Ramsey | Signed |
| 0 | 8/19/1987 | OTT | Romero | Released |