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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tamasaburo Kato# | .388 | 2021-2033 | |
| 2 | Bob Campbell | .350 | 2014-2025 | |
| 3 | Ray Sears | .349 | 2013-2028 | |
| 4 | David Edwards# | .346 | 2019-2033 | |
| 5 | Herman Hayes | .333 | 2015-2029 | |
| 6 | Nate Cates | .330 | 2016-2028 | |
| 7 | Bartolo Morales# | .313 | 2022-2033 | |
| 8 | Ed Hopkins | .311 | 2018-2027 | |
| 9 | Gabriel Rodríguez | .276 | 2018-2029 |
