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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Rodrigo Rosado | 2.892 | 2034-2044 | |
| 2 | Casey Painter | 2.954 | 2019-2028 | |
| 3 | Kil-sung Kim | 3.130 | 2033-2043 | |
| 4 | Brian Ashby | 3.484 | 2018-2024 | |
| 5 | Tony Sanders | 3.525 | 2036-2044 | |
| 6 | Victor Rodriguez | 3.616 | 2018-2024 | |
| 7 | Hugo Torres | 3.985 | 2025-2032 | |
| 8 | Vitantonio Campagne | 4.537 | 2027-2032 | |
| 9 | Marcos Adames | 5.828 | 2022-2031 |
