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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Thom Wilcox* | .4551 | 2013-2028 | |
| 2 | Noel Ballard* | .4235 | 2017-2034 | |
| 3 | Tamasaburo Kato | .3925 | 2021-2037 | |
| 4 | Juan Cabrera | .3565 | 2015-2036 | |
| 5 | Xavier Hernández | .3480 | 2026-2039 | |
| 6 | Nelson Jaramillo# | .3439 | 2029-2043 | |
| 7 | Roland Deschain | .3400 | 2026-2040 | |
| 8 | Ki-tak Im | .3395 | 2024-2036 | |
| 9 | Mario Castillo# | .3375 | 2032-2044 | |
| 10 | Max Bortenschlager# | .3305 | 2036-2044 | |
| 11 | Bob Heller | .3256 | 2015-2026 | |
| 12 | Datu Lesaca# | .3230 | 2034-2044 | |
| 13 | Tim Barnes | .3193 | 2017-2027 | |
| 14 | Bernardo Herrera | .2988 | 2019-2035 | |
| 15 | Jorge Trevino | .2973 | 2019-2026 |
