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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | António Vélez# | 1.076 | 2035-2040 | |
| 2 | José Quintanilla | 1.058 | 2026-2036 | |
| 3 | Félix García | 1.054 | 2009-2021 | |
| 4 | Tulio Fernández# | 1.046 | 2036-2039 | |
| 5 | Yoriie Oka | 1.011 | 2022-2037 | |
| 6 | Bartolo Trujillo | 1.006 | 2027-2035 | |
| 7 | Robert Cooper | 0.988 | 2009-2020 | |
| 8 | John Klinger | 0.977 | 2019-2025 | |
| 9 | Ramón Hernández | 0.966 | 2017-2022 |
