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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ernesto Souza | 1.066 | 2026-2029 | |
| 2 | Bill Dennis | 1.037 | 2020-2028 | |
| 3 | Mitsuhide Bando | 1.034 | 2037-2041 | |
| 4 | Javier Chávez | .989 | 2022-2032 |
