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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Luis Guerrero | 1.048 | 2026-2029 | |
| 2 | Nelson Plasenia | 1.044 | 2017-2028 | |
| 3 | Dave Young | 1.017 | 2016-2025 | |
| 4 | Carl Tucker | .983 | 2028-2032 |
