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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jorge Herrera | .3962 | 2035-2052 | |
| 2 | Roberto Salazar | .3933 | 2018-2039 | |
| 3 | Ta-hye Keng# | .3823 | 2048-2055 | |
| 4 | Emílio Sáenz | .3645 | 2014-2025 | |
| 5 | Jesús Vargas | .3602 | 2029-2045 | |
| 6 | Bartolo Soto | .3591 | 2031-2043 | |
| 7 | Lester Threlfall# | .3417 | 2042-2055 | |
| 8 | Esteban Sifuentes | .3410 | 2041-2047 | |
| 9 | Alfredo Martínez* | .3268 | 2025-2040 | |
| 10 | Dave Ash | .3136 | 2023-2031 |
