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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OOPS | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | David Buchanan# | .4813 | 2021 | |
| 2 | Casey Kelly# | .5049 | 2021 | |
| 3 | Luis Perdomo# | .5816 | 2017 | |
| 4 | Jhony Brito# | .6037 | 2024 | |
| 5 | Josh James# | .6180 | 2020 | |
| 6 | Roberto Perez | .6201 | 2017 | |
| 7 | Carlos Rodon# | .6233 | 2017 | |
| 8 | Danny Salazar | .6270 | 2014 | |
| 9 | Julio Teheran | .6329 | 2013 | |
| 10 | Alex Meyer | .6451 | 2014 | |
| 11 | Carlos Rodon# | .6649 | 2016 | |
| 12 | Madison Bumgarner | .7095 | 2013 | |
| 13 | Grayson Long | .7568 | 2018 | |
| 14 | Ryne Nelson# | .7755 | 2023 | |
| 15 | Clay Buchholz | .8091 | 2013 | |
| 16 | Jeremy Hefner | .8267 | 2013 | |
| 17 | Miguel A. Gonzalez | .8306 | 2014 | |
| 18 | Anthony DeSclafani# | .8319 | 2016 | |
| 19 | Jake Thompson | .8703 | 2020 | |
| 20 | Miguel A. Gonzalez | .8776 | 2016 | |
| 21 | Austin Pruitt# | .8877 | 2021 | |
| 22 | Robbie Erlin# | .9094 | 2014 |
