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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Mounir Soulier# | .2241 | 1952 | |
| 2 | Aaron Maier# | .3182 | 1952 | |
| 3 | Mounir Soulier# | .3220 | 1953 | |
| 4 | Danny Arellano# | .3256 | 1953 | |
| 5 | Aaron Maier# | .3333 | 1953 | |
| 6 | Omar Cespedes# | .3452 | 1953 | |
| 7 | Ewan Moore# | .3623 | 1952 |
