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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Kiyonobu Yamasaki# | .4518 | 2020-2026 | |
| 2 | Oliver North# | .4478 | 2017-2027 | |
| 3 | Kawanari Takahashi# | .4123 | 2021-2027 | |
| 4 | Seiichi Iwamoto# | .3932 | 2021-2027 | |
| 5 | Tim Raines# | .3917 | 2014-2025 | |
| 6 | Bartolo Valentín# | .3911 | 2018-2025 | |
| 7 | Lee Jones# | .3844 | 2021-2027 | |
| 8 | Bernardo Cisneros# | .3780 | 2016-2027 | |
| 9 | Octávio García# | .3776 | 2020-2027 | |
| 10 | Tom Klein | .3646 | 2017-2021 | |
| 11 | Bruce Joyner | .3592 | 2017-2020 | |
| 12 | Jesús Hernández | .3557 | 2013-2021 | |
| 13 | Carlos Ávila# | .3549 | 2019-2025 | |
| 14 | Bill McIntyre# | .3546 | 2020-2026 | |
| 15 | Dave Moore# | .3543 | 2020-2027 | |
| 16 | Bob Hayes# | .3532 | 2018-2022 | |
| 17 | Takanibu Kobayashi# | .3511 | 2015-2027 | |
| 18 | Mike Anderson# | .3507 | 2020-2027 | |
| 19 | P.J. Baker | .3418 | 2013-2017 | |
| 20 | Vincent Bordes | .3391 | 2016-2021 | |
| 21 | Wilson Flores# | .3311 | 2023-2027 | |
| 22 | Rafael Arreola# | .3292 | 2018-2024 | |
| 23 | Yasushi Kato# | .3269 | 2019-2025 | |
| 24 | Anthony Walker# | .3254 | 2019-2027 | |
| 25 | Mason Eilers# | .3220 | 2021-2027 | |
| 26 | Ken Forryan | .3186 | 2014-2020 | |
| 27 | Tom Hughes# | .3184 | 2017-2022 | |
| 28 | Mal Rivers# | .3079 | 2021-2027 |
