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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Blake Swihart | .4558 | 2017 | |
| 2 | Keibert Ruiz# | .4467 | 2020 | |
| 3 | Jakson Reetz# | .4417 | 2024 | |
| 4 | Daniel Cope# | .4238 | 2023 | |
| 5 | J.T. Realmuto# | .4178 | 2015 | |
| 5 | Raywilly Gomez | .4178 | 2017 | |
| 7 | Andrew Susac | .4170 | 2014 | |
| 8 | Curtis Casali# | .4032 | 2014 | |
| 9 | Bryan Anderson | .3983 | 2015 | |
| 10 | Jeremy Lucas | .3763 | 2017 | |
| 11 | Joseph DeCarlo | .3756 | 2019 | |
| 12 | Adley Rutschman# | .3742 | 2021 | |
| 13 | Carlos Corporan | .3693 | 2014 | |
| 14 | Jesus Sucre | .3516 | 2015 | |
| 15 | Kellin Deglan | .3490 | 2016 | |
| 16 | Jesus Sucre | .3422 | 2016 | |
| 17 | Jose Herrera# | .3399 | 2024 | |
| 18 | M.P. Cokinos | .3370 | 2016 | |
| 19 | Jesus Sucre | .3184 | 2013 | |
| 20 | Alex Jackson# | .3181 | 2023 | |
| 21 | William Contreras# | .3072 | 2021 |
