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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Duane Deal# | .1400 | 2030 | |
| 2 | Jim Snyder# | .2432 | 2033 | |
| 3 | Ángel Rodríguez | .2941 | 2031 | |
| 4 | Danny Clayton# | .3091 | 2030 | |
| 5 | Henry Owens# | .3158 | 2033 | |
| 6 | Matt Hoffman | .3750 | 2028 | |
| 7 | Lou Ferrell# | .3788 | 2036 | |
| 8 | Jesús Rivera# | .4237 | 2035 | |
| 9 | Dave Wheeler# | .4667 | 2038 | |
| 10 | Mike Marks | .4714 | 2032 |
