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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ye Der | 1.065 | 2015-2029 | |
| 2 | Roberto Salazar | 1.055 | 2018-2039 | |
| 3 | Dave Ash | 1.042 | 2023-2031 | |
| 4 | Luis Freitas | 1.038 | 2029-2035 | |
| 5 | Jorge Herrera# | 1.031 | 2035-2040 | |
| 6 | Jesús Vargas# | 1.029 | 2029-2040 | |
| 6 | Bobby Butterfield# | 1.029 | 2033-2040 | |
| 8 | Emílio Sáenz | 1.016 | 2014-2025 | |
| 8 | Bartolo Soto# | 1.016 | 2031-2040 | |
| 10 | Alberto Ramírez# | 1.011 | 2037-2040 | |
| 11 | Mike Gardner | .996 | 2018-2032 | |
| 12 | Alfredo Martínez# | .972 | 2025-2040 | |
| 13 | Rick Mayfield | .971 | 2027-2035 | |
| 14 | Steve Ingram | .967 | 2014-2029 | |
| 15 | Rafael Sánchez | .950 | 2025-2035 |
