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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OOBP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Brock Dykxhoorn | .1964 | 2020 | |
| 2 | Cody Reed | .2273 | 2016 | |
| 3 | Diomenges Almengo# | .2836 | 2018 | |
| 4 | Niall Windeler# | .2903 | 2021 | |
| 5 | Shane Dawson | .3108 | 2018 | |
| 6 | Carlos G. Hernandez | .3158 | 2020 | |
| 7 | Lucas Giolito# | .3258 | 2014 | |
| 8 | Reid Morgan# | .3425 | 2020 | |
| 9 | Adrian Houser# | .4028 | 2014 | |
| 10 | Lucas Giolito# | .4100 | 2013 | |
| 11 | Chih-Wei Hu | .4375 | 2014 |
