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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Pat Lafontaine | 1.098 | 2014-2016 | |
| 1 | Jared Stiffler | 1.098 | 2023-2025 | |
| 3 | Vinny Calvillo | 1.044 | 2027-2029 | |
| 4 | Jon Becker# | 1.029 | 2039-2042 | |
| 4 | Andy Turner | 1.029 | 2020-2022 | |
| 6 | Alfredo Leyva | 0.996 | 2025-2027 |
