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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Alfredo Montalvo | .259 | 2030-2037 | |
| 2 | Rodrigo Álvarez# | .409 | 2033-2038 | |
| 3 | William Gallegos# | .434 | 2033-2038 | |
| 4 | Horace Jacobs# | .459 | 2028-2037 | |
| 5 | Iván Romero# | .516 | 2032-2038 |
