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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Santiago Espinal# | .4542 | 2020 | |
| 2 | Jake Cronenworth# | .4456 | 2020 | |
| 3 | Ramon Urias# | .4440 | 2021 | |
| 4 | Joey Wong | .4348 | 2014 | |
| 5 | J.C. Cardenas | .4263 | 2018 | |
| 6 | Sean Miller | .4224 | 2018 | |
| 7 | Engelb Vielma | .4200 | 2018 | |
| 8 | Zach Walters | .4179 | 2013 | |
| 9 | Taylor Walls# | .4125 | 2020 | |
| 10 | Mike Jarvis# | .4120 | 2024 | |
| 11 | Miguel Rojas# | .4115 | 2015 | |
| 12 | Willi Castro# | .4094 | 2019 | |
| 13 | Jack Blomgren# | .4078 | 2025 | |
| 14 | Nicholas Shaw | .4077 | 2015 | |
| 15 | Franklin Barreto# | .4043 | 2017 | |
| 16 | Carlos Penalver | .3992 | 2019 | |
| 17 | Tyler Pastornicky | .3928 | 2016 | |
| 18 | Joey Wong | .3865 | 2013 | |
| 19 | Taylor Walls# | .3853 | 2024 | |
| 20 | Miguel A. Hernandez# | .3848 | 2023 | |
| 21 | Brayan Rocchio# | .3799 | 2024 | |
| 22 | Cadyn Grenier# | .3785 | 2025 | |
| 23 | Yadiel Rivera | .3769 | 2018 | |
| 24 | James Beresford | .3739 | 2013 | |
| 24 | A.J. Simcox | .3739 | 2020 | |
| 26 | Nick Noonan | .3728 | 2018 | |
| 27 | Erick Mejia | .3690 | 2023 | |
| 28 | Justin Sellers | .3656 | 2017 | |
| 29 | Jake Hager# | .3647 | 2024 | |
| 30 | Mason McCoy# | .3622 | 2022 | |
| 31 | Willengton Cruz | .3590 | 2020 | |
| 32 | Jose Barrero# | .3569 | 2024 | |
| 33 | Jeison Guzman# | .3568 | 2023 | |
| 34 | Jordan Gore | .3563 | 2021 | |
| 35 | Zach Walters | .3521 | 2014 | |
| 36 | Eric Stamets | .3485 | 2022 | |
| 37 | A.J. Simcox | .3462 | 2021 | |
| 38 | Trevor Story# | .3451 | 2015 | |
| 39 | Oneil Cruz# | .3445 | 2021 | |
| 40 | Raynel Delgado# | .3419 | 2023 | |
| 41 | James Beresford | .3367 | 2015 | |
| 42 | Gustavo Nunez | .3361 | 2013 | |
| 43 | Darwin Perez | .3339 | 2015 | |
| 44 | Max Muncy# | .3333 | 2025 | |
| 44 | Jeremy Pena# | .3333 | 2021 | |
| 46 | Andy Perez# | .3263 | 2024 | |
| 47 | Jiovanni Mier | .3224 | 2015 | |
| 48 | Ivan Castillo# | .3105 | 2017 | |
| 49 | Mike Jarvis# | .3104 | 2023 | |
| 50 | Giuseppe Papaccio | .3043 | 2017 |
