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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Pancho Ruíz# | .4278 | 2020 | |
| 2 | Jason Ruffin# | .4159 | 2022 | |
| 3 | José Vargas# | .4070 | 2024 | |
| 4 | Esteban Garza# | .4064 | 2023 | |
| 5 | Ron Peterson# | .4019 | 2020 | |
| 6 | Jason Ruffin# | .3991 | 2023 | |
| 7 | Jesús González# | .3984 | 2021 | |
| 8 | Mike Greene# | .3981 | 2024 | |
| 9 | Robbie Anderson# | .3770 | 2023 | |
| 10 | David Rivas# | .3761 | 2022 | |
| 11 | Gustavo Berrios# | .3756 | 2022 | |
| 12 | Shawn McCormack# | .3706 | 2023 | |
| 13 | Manuel Domínguez# | .3668 | 2024 | |
| 14 | Matt Love# | .3538 | 2022 | |
| 15 | José Salazar | .3520 | 2021 | |
| 16 | Kenko Ueda | .3490 | 2021 | |
| 17 | Ray Anderson# | .3462 | 2022 | |
| 18 | Eugene Bentley# | .3449 | 2023 | |
| 19 | Gustavo Berrios# | .3443 | 2020 | |
| 20 | Shawn McCormack# | .3357 | 2022 | |
| 21 | Gustavo Berrios# | .3351 | 2021 | |
| 22 | Evan Nelson# | .3349 | 2022 | |
| 23 | Jimmy Dawson# | .3285 | 2023 | |
| 24 | José Pacheco# | .3281 | 2024 | |
| 25 | Mike Russell# | .3268 | 2020 | |
| 26 | José León# | .3241 | 2024 | |
| 27 | Geoff Rivers# | .3146 | 2023 | |
| 28 | Jorge Flores# | .2861 | 2020 |
