| Retro ID | Player | Year | Team | History | Is Pitcher? | PA or IP | WAR | Wins | Losses |
|---|---|---|---|---|---|---|---|---|---|
| costj001 | Costello, John | 1988 | SLN | All SLN | 1 | 50 | 0.9 | 2 | 1 |
| costj001 | Costello, John | 1989 | SLN | All SLN | 1 | 62 | 0.3 | 1 | 2 |
| costj001 | Costello, John | 1991 | SDN | All SDN | 1 | 35 | 0 | 0 | 1 |
| costj001 | Costello, John | 1990 | SLN | All SLN | 1 | 4 | -0.1 | 0 | 0 |
| costj001 | Costello, John | 1990 | MON | All MON | 1 | 6 | -0.2 | 0 | 0 |
| costj001 | Costello, John | 1991 | SDN | All SDN | 0 | 1 | Array['WAR'] | 0 | 0 |
| costj001 | Costello, John | 1989 | SLN | All SLN | 0 | 6 | Array['WAR'] | 0 | 0 |
| costj001 | Costello, John | 1988 | SLN | All SLN | 0 | 5 | Array['WAR'] | 0 | 0 |