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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Jason Rutherford# | 1.200 | 2024 | |
| 1 | Tony Manriquez# | 1.200 | 2024 | |
| 3 | Luis Salazar# | 1.301 | 2025 | |
| 4 | Ricky Martinez# | 1.552 | 2025 | |
| 5 | Carlos Juarez# | 1.800 | 2025 | |
| 6 | Ricky Acosta# | 1.862 | 2024 | |
| 7 | Dave Smith# | 2.045 | 2027 | |
| 8 | Luis Salazar# | 2.160 | 2024 | |
| 8 | Willie Castro# | 2.160 | 2025 | |
| 10 | Serge Garnier# | 2.172 | 2024 | |
| 11 | Ben Moore# | 2.305 | 2026 | |
| 12 | Edgar Villagomez# | 2.382 | 2027 | |
| 13 | Willie Castro# | 2.411 | 2024 | |
| 14 | Ricky Martinez# | 2.558 | 2027 | |
| 15 | Billy Corrigan# | 2.571 | 2027 | |
| 15 | Stephen Wilkins# | 2.571 | 2026 | |
| 17 | Mario Villalobos# | 2.652 | 2027 | |
| 18 | Tom Parker# | 2.739 | 2027 | |
| 19 | Nick Sorensen# | 2.746 | 2026 | |
| 20 | Willie de Leon# | 2.793 | 2027 | |
| 21 | Corey Gillis# | 3.000 | 2025 | |
| 22 | Fred Cornett# | 3.048 | 2025 | |
| 23 | Bobby Juarez# | 3.086 | 2027 | |
| 24 | Ricky Acosta# | 3.197 | 2025 | |
| 25 | Arturo Paredes# | 3.635 | 2024 | |
| 26 | Corey Gillis# | 3.712 | 2027 | |
| 27 | Tim Lugo# | 3.797 | 2027 | |
| 28 | Joel Tangarife# | 3.808 | 2027 | |
| 29 | Rico Duran# | 3.908 | 2025 | |
| 30 | Harry Landers# | 3.927 | 2027 | |
| 31 | Greg Olsen# | 4.000 | 2027 | |
| 32 | Angel Lopez# | 4.339 | 2024 | |
| 33 | Rico Duran# | 4.355 | 2024 | |
| 34 | Carlos Juarez# | 4.371 | 2024 | |
| 35 | Dave Smith# | 4.558 | 2026 | |
| 36 | Mitch Burgess# | 4.618 | 2026 | |
| 37 | Leo Marquez# | 4.714 | 2027 | |
| 38 | Joel Tangarife# | 5.178 | 2025 | |
| 39 | Devin Ballard# | 5.311 | 2026 | |
| 40 | Willis Novoa# | 5.329 | 2024 | |
| 41 | Mark Ryan# | 5.400 | 2024 | |
| 42 | Arturo Paredes# | 5.625 | 2025 | |
| 43 | Daryl Rich# | 5.684 | 2027 | |
| 44 | Jonathan Smith# | 5.754 | 2026 | |
| 45 | Jason Rutherford# | 5.870 | 2025 | |
| 46 | Phil Racine# | 6.136 | 2026 | |
| 47 | Jadon Lynch# | 6.623 | 2026 | |
| 48 | Jose Chavez# | 7.468 | 2024 | |
| 49 | Brandon Cobb# | 7.892 | 2025 | |
| 50 | Alex Sandoval# | 9.000 | 2027 | |
| 51 | Bill Kowalchuk# | 9.391 | 2024 |
