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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Oswaldo Cabrera# | .4886 | 2019 | |
| 2 | Brett Pirtle | .4482 | 2017 | |
| 3 | Luis Jean | .4437 | 2021 | |
| 4 | Jayce Easley# | .4077 | 2023 | |
| 5 | Eric Brown Jr.# | .4060 | 2023 | |
| 6 | Thomas Gavello# | .4016 | 2024 | |
| 6 | Brandon Drury# | .4016 | 2015 | |
| 8 | Seth Lancaster | .4004 | 2020 | |
| 9 | Alex Yarbrough | .3961 | 2014 | |
| 10 | Avery Romero | .3953 | 2016 | |
| 11 | Jimmy Allen | .3932 | 2017 | |
| 12 | Ty Young | .3884 | 2017 | |
| 13 | Christian Lopes | .3882 | 2015 | |
| 14 | Joe Bennie | .3880 | 2017 | |
| 15 | Alex Yarbrough | .3825 | 2015 | |
| 16 | Tyler Friis | .3807 | 2021 | |
| 17 | David Masters | .3781 | 2017 | |
| 18 | Jamari Baylor# | .3743 | 2024 | |
| 19 | Jose Rondon | .3558 | 2016 | |
| 20 | Luis Mendez | .3514 | 2016 | |
| 21 | Luis Mendez | .3462 | 2014 | |
| 22 | Christian Lopes | .3434 | 2014 | |
| 23 | L.J. Mazzilli | .3277 | 2014 | |
| 24 | Zachary Babitt | .3044 | 2013 | |
| 25 | Seth Lancaster | .3043 | 2021 | |
| 26 | Christian Lopes | .2911 | 2013 |
