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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Augusto Ramos# | 3.59 | 2026-2028 | |
| 2 | Alin Oanta# | 3.61 | 2020-2027 | |
| 3 | Alejandro Arteaga# | 3.72 | 2024-2028 | |
| 4 | Cipriano Costa# | 4.07 | 2020-2028 | |
| 5 | Armando Hernández | 4.17 | 2020-2022 | |
| 6 | Eduardo Bravo# | 4.73 | 2025-2028 | |
| 7 | Bayram Tanaoglu# | 4.86 | 2023-2028 | |
| 8 | Ricky Jackson# | 4.90 | 2025-2028 | |
| 9 | Tony Madden | 5.73 | 2015-2021 | |
| 9 | Felipe Gutiérrez | 5.73 | 2016-2019 | |
| 11 | Robert Archer | 5.90 | 2016-2022 | |
| 12 | Benjamin Brouwer | 6.05 | 2017-2019 | |
| 13 | Eric Lang# | 6.31 | 2017-2021 |
