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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | António Martínez# | .393 | 2024-2029 | |
| 2 | Tamasaburo Kato# | .392 | 2021-2029 | |
| 3 | Bob Campbell | .350 | 2014-2025 | |
| 4 | Ray Sears | .349 | 2013-2028 | |
| 5 | David Edwards# | .346 | 2019-2029 | |
| 6 | Herman Hayes# | .333 | 2015-2029 | |
| 7 | Brian O'Brian | .332 | 2013-2022 | |
| 8 | Nate Cates# | .330 | 2016-2028 | |
| 9 | Bartolo Morales# | .315 | 2022-2029 | |
| 10 | Ed Hopkins# | .311 | 2018-2027 | |
| 11 | Matt Sheppard# | .284 | 2019-2029 | |
| 12 | Gabriel Rodríguez# | .276 | 2018-2029 |
