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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Willson Contreras# | .4429 | 2018 | |
| 2 | Andrew Knapp# | .4280 | 2021 | |
| 3 | Rafael Lopez | .4271 | 2018 | |
| 4 | Austin Wells# | .4168 | 2024 | |
| 5 | Sandy Leon# | .4072 | 2017 | |
| 6 | Tim Federowicz | .4056 | 2017 | |
| 7 | Drake Baldwin# | .4031 | 2025 | |
| 8 | Dustin Garneau | .3949 | 2017 | |
| 9 | Devin Mesoraco | .3943 | 2013 | |
| 10 | Garrett Stubbs# | .3933 | 2018 | |
| 11 | Steve Lerud | .3924 | 2013 | |
| 12 | Bryan Lavastida# | .3883 | 2023 | |
| 13 | Deivy Grullon# | .3866 | 2021 | |
| 14 | Moises Ballesteros# | .3835 | 2025 | |
| 15 | Jhonny Pereda# | .3825 | 2025 | |
| 16 | Zach Britton# | .3808 | 2023 | |
| 17 | Henry Davis# | .3772 | 2024 | |
| 18 | Garrett Stubbs# | .3770 | 2019 | |
| 19 | Tyler Heineman# | .3744 | 2018 | |
| 20 | Tyler Heineman# | .3742 | 2019 | |
| 21 | Endy Rodriguez# | .3605 | 2023 | |
| 22 | Reese McGuire# | .3603 | 2018 | |
| 23 | Francisco Mejia# | .3596 | 2025 | |
| 24 | Juan Centeno# | .3577 | 2017 | |
| 25 | Bryan Lavastida# | .3559 | 2022 | |
| 26 | Jose Lobaton | .3553 | 2016 | |
| 27 | Luis Campusano# | .3541 | 2021 | |
| 28 | Luke Maile# | .3438 | 2023 | |
| 29 | Drew Romo# | .3397 | 2024 | |
| 30 | Hector Sanchez | .3327 | 2013 | |
| 31 | Max Stassi# | .3269 | 2015 | |
| 32 | Cam Maron | .3038 | 2015 |
