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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gabriel Gutiérrez | 1.762 | 2011-2020 | |
| 2 | Xavier González | 1.808 | 2014-2036 | |
| 3 | José López | 2.331 | 2009-2018 | |
| 4 | José Santos | 2.381 | 2012-2026 | |
| 5 | Ángel Valdéz | 2.399 | 2017-2026 | |
| 6 | Manuel Piñal# | 2.408 | 2032-2039 | |
| 7 | Javier Gómez | 2.411 | 2014-2025 | |
| 8 | Gustavo Luján# | 2.579 | 2029-2039 | |
| 9 | Ron Gómez# | 2.607 | 2024-2039 | |
| 9 | Clark Vallés# | 2.607 | 2029-2039 | |
| 11 | Gary Edwards | 2.656 | 2009-2018 | |
| 12 | Ángel López# | 2.662 | 2031-2039 | |
| 13 | José Morín | 2.688 | 2016-2020 | |
| 14 | Eduardo Camacho# | 2.730 | 2027-2039 | |
| 15 | José Rodríguez | 2.745 | 2028-2037 | |
| 16 | Humberto Hernández# | 2.756 | 2035-2039 | |
| 17 | Ken Martínez# | 2.778 | 2031-2039 | |
| 18 | Miguel Cordero# | 2.798 | 2027-2039 | |
| 19 | Jesús Salazar# | 2.804 | 2036-2039 | |
| 20 | Martin Rodríguez# | 2.827 | 2034-2039 | |
| 21 | Alberto Caballero# | 2.840 | 2036-2039 | |
| 22 | Jorge Valentín# | 2.927 | 2030-2039 | |
| 23 | Mal Benton | 2.929 | 2017-2029 | |
| 24 | Juan Martínez | 2.931 | 2012-2025 | |
| 25 | Carlton Minor# | 2.935 | 2027-2039 | |
| 26 | Tony Salazar# | 2.982 | 2029-2039 | |
| 27 | Eiichi Nakao | 2.984 | 2010-2020 | |
| 28 | Joe Rivera | 3.008 | 2029-2038 | |
| 29 | Mike Anderson# | 3.016 | 2029-2039 | |
| 30 | Arturo Ramírez | 3.039 | 2013-2029 | |
| 31 | Jesús Cantú# | 3.083 | 2019-2039 | |
| 32 | Martín Martínez# | 3.097 | 2028-2039 | |
| 33 | José Méndez | 3.113 | 2012-2025 | |
| 34 | Tomás Esparza | 3.114 | 2012-2039 | |
| 35 | Iván Rosa# | 3.160 | 2028-2039 | |
| 36 | Juan Gonzáles# | 3.169 | 2023-2032 | |
| 37 | Armando Rodríguez# | 3.185 | 2030-2039 | |
| 38 | Jorge Alou | 3.279 | 2021-2039 | |
| 39 | Fernando Vásquez# | 3.302 | 2030-2039 | |
| 40 | Emílio Alvarado | 3.373 | 2007-2012 | |
| 41 | Alfredo García | 3.427 | 2015-2028 | |
| 42 | Jay Black# | 3.451 | 2021-2039 | |
| 42 | Alonso Flores# | 3.451 | 2030-2039 | |
| 44 | Pedro Ramírez | 3.507 | 2007-2016 | |
| 45 | José Gonzáles# | 3.602 | 2027-2039 | |
| 46 | Alonso González | 3.639 | 2019-2031 | |
| 47 | Jerry Collins | 3.653 | 2007-2024 | |
| 48 | Juan Román | 3.714 | 2014-2024 | |
| 49 | Manuel Ávila# | 3.837 | 2021-2028 | |
| 50 | Rafael Quintero | 3.850 | 2027-2035 | |
| 51 | Luis Cantú | 3.878 | 2022-2027 | |
| 52 | António Rodríguez# | 3.929 | 2028-2039 | |
| 53 | León Alonzo# | 3.970 | 2025-2039 | |
| 54 | Jorge Escamilla# | 4.493 | 2025-2039 | |
| 55 | Jerome Beaton | 4.840 | 2007-2013 |
