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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Jayden Williams# | 1.328 | 2019 | |
| 2 | John Brown# | 1.952 | 2019 | |
| 3 | Luis Mora# | 2.015 | 2019 | |
| 4 | Pat Burkholder# | 2.118 | 2019 | |
| 5 | Bill Frazer# | 2.872 | 2019 | |
| 6 | Adam Obermeier# | 3.857 | 2019 | |
| 7 | Brad Williamson# | 4.021 | 2019 | |
| 8 | Marv Millard# | 4.629 | 2019 | |
| 9 | Charlie Hunter# | 4.696 | 2019 | |
| 10 | Kyle Farewell# | 6.894 | 2019 | |
| 11 | Chris Hipp# | 7.020 | 2019 |
