| Retro ID | Player | Year | Team | History | Is Pitcher? | PA or IP | WAR | Wins | Losses |
|---|---|---|---|---|---|---|---|---|---|
| obrip102 | O'Brien, Pete | 1907 | WS1 | All WS1 | 0 | 147 | -0.5 | 0 | 2 |
| obrip102 | O'Brien, Pete | 1906 | SLA | All SLA | 0 | 569 | 0.4 | 3 | 7 |
| obrip102 | O'Brien, Pete | 1907 | CLE | All CLE | 0 | 152 | 0.1 | 1 | 2 |
| obrip102 | O'Brien, Pete | 1901 | CIN | All CIN | 0 | 56 | -0.4 | 0 | 1 |