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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ronald Brown | 0.000 | 1914-1914 | |
| 1 | Guadalupe Castañeda# | 0.000 | 1913-1913 | |
| 1 | Prudencio Castillo | 0.000 | 1912-1912 | |
| 1 | Rodrigo Chávez | 0.000 | 1901-1904 | |
| 1 | Gannon Cyr | 0.000 | 1901-1901 | |
| 1 | Isma'il Farraj# | 0.000 | 1912-1912 | |
| 1 | Rodrigo García | 0.000 | 1905-1905 | |
| 1 | Odemar Jaarsma# | 0.000 | 1914-1914 | |
| 1 | Ernesto Jiménez# | 0.000 | 1910-1910 | |
| 1 | Admeto Largaespada# | 0.000 | 1913-1913 | |
| 1 | Jack Lewis | 0.000 | 1914-1914 | |
| 1 | Marcos Luna# | 0.000 | 1912-1912 | |
| 1 | Raúl Medina# | 0.000 | 1911-1911 | |
| 1 | Simon Prodoprigora | 0.000 | 1914-1914 | |
| 1 | Edmundo Ramírez# | 0.000 | 1914-1914 | |
| 1 | Francisco Rivera | 0.000 | 1906-1906 | |
| 1 | Cristóbal Sánchez# | 0.000 | 1914-1914 | |
| 1 | Tristán Trujillo# | 0.000 | 1914-1914 | |
| 19 | Pablo Sánchez | 0.450 | 1903-1904 | |
| 20 | Guarionex Chairez# | 0.587 | 1913-1914 | |
| 21 | Adrián García# | 0.692 | 1911-1912 | |
| 22 | Don Keown | 0.939 | 1914-1914 | |
| 23 | Sotero Ramírez# | 0.957 | 1914-1914 | |
| 24 | Avelino Oliva# | 1.000 | 1914-1914 | |
| 25 | Fernando García# | 1.080 | 1913-1913 | |
| 26 | Ricardo García | 1.125 | 1912-1912 | |
| 27 | Gerardo Becerra# | 1.157 | 1913-1914 | |
| 28 | Stuart Jones | 1.174 | 1914-1914 | |
| 29 | Arthur Fleetwood | 1.209 | 1914-1914 | |
| 30 | Julián Orta# | 1.239 | 1910-1914 | |
| 31 | Santiago Ávalos# | 1.243 | 1910-1911 | |
| 32 | Luis Aguirre# | 1.338 | 1909-1910 | |
| 33 | Joseph Robin | 1.378 | 1914-1914 | |
| 34 | Mauricio Madrid# | 1.421 | 1911-1911 | |
| 35 | Ángel Martínez# | 1.436 | 1914-1914 | |
| 36 | Helio Hernández# | 1.505 | 1913-1914 | |
| 37 | Britomaro Díaz# | 1.543 | 1914-1914 | |
| 37 | Luis Rojas# | 1.543 | 1914-1914 | |
| 39 | Tito Pérez# | 1.588 | 1912-1912 | |
| 39 | Evaristo Rodríguez# | 1.588 | 1910-1910 | |
| 41 | Gabriel Feliciano# | 1.643 | 1913-1914 | |
| 42 | Matthieu le Guen# | 1.667 | 1914-1914 | |
| 43 | Oscar Carreno | 1.688 | 1914-1914 | |
| 44 | Lidio Rodríguez# | 1.716 | 1912-1914 | |
| 45 | Florencio Rodríguez# | 1.800 | 1914-1914 | |
| 45 | Josías Rodríguez | 1.800 | 1911-1912 | |
| 47 | Pelayo Muñoz | 1.853 | 1910-1910 | |
| 48 | Luis Guzmán# | 1.862 | 1913-1913 | |
| 49 | Dalton Guerrero# | 1.901 | 1914-1914 | |
| 50 | Mercuriano Guerrero | 1.929 | 1914-1914 | |
| 51 | Malik Drakes | 1.976 | 1914-1914 | |
| 52 | Hortensio Galicia# | 2.000 | 1912-1912 | |
| 52 | Egidio Rodríguez | 2.000 | 1914-1914 | |
| 54 | Bill Brenton | 2.037 | 1904-1914 | |
| 55 | Chris Crowley | 2.051 | 1914-1914 | |
| 56 | Ludovico Gómez# | 2.068 | 1911-1912 | |
| 57 | Ángel Quiles# | 2.077 | 1913-1913 | |
| 57 | Lewis Stewart | 2.077 | 1914-1914 | |
| 59 | Ignacio González# | 2.097 | 1911-1914 | |
| 60 | Alberto López# | 2.137 | 1909-1914 | |
| 61 | Abelardo Almaraz# | 2.160 | 1914-1914 | |
| 61 | Fernando Martín | 2.160 | 1904-1905 | |
| 63 | Carmelo Contreras# | 2.182 | 1914-1914 | |
| 64 | Patroclo Alvarenga# | 2.189 | 1913-1913 | |
| 65 | Américo Gutiérrez# | 2.250 | 1914-1914 | |
| 65 | Elliot Pelletier# | 2.250 | 1913-1913 | |
| 65 | Ambiórix Zapata# | 2.250 | 1914-1914 | |
| 68 | José Arauz# | 2.314 | 1913-1914 | |
| 69 | Efraín Jurado# | 2.333 | 1905-1909 | |
| 70 | Alcides García# | 2.348 | 1914-1914 | |
| 70 | Avelino Guillén# | 2.348 | 1914-1914 | |
| 72 | Pirro Arias | 2.358 | 1911-1911 | |
| 73 | James Kerr | 2.374 | 1911-1911 | |
| 74 | Jibril Bashir# | 2.380 | 1912-1913 | |
| 75 | Leónidas Magaña | 2.389 | 1911-1912 | |
| 76 | Newt Turnbull | 2.400 | 1913-1913 | |
| 77 | Akhila Trusha | 2.406 | 1914-1914 | |
| 78 | Fausto Linares# | 2.423 | 1914-1914 | |
| 79 | Gannon Johnson# | 2.455 | 1914-1914 | |
| 79 | Pirro Maldonado# | 2.455 | 1914-1914 | |
| 79 | Benjamin Murray | 2.455 | 1912-1912 | |
| 79 | Oscar Rodríguez | 2.455 | 1905-1906 | |
| 83 | Harmon Beck | 2.467 | 1904-1914 | |
| 84 | Eunosto Rosas# | 2.473 | 1913-1914 | |
| 85 | Matías Arcos# | 2.483 | 1913-1914 | |
| 86 | Gumersindo Rodríguez# | 2.487 | 1902-1913 | |
| 87 | Sean Daniel | 2.492 | 1914-1914 | |
| 88 | Hichem Morel# | 2.531 | 1914-1914 | |
| 88 | Kavan Neligan# | 2.531 | 1911-1911 | |
| 90 | Aniceto La Chataigneraie# | 2.542 | 1912-1912 | |
| 91 | Diego Bedolla# | 2.545 | 1910-1911 | |
| 92 | Enda Davis# | 2.571 | 1914-1914 | |
| 93 | Santiago Castañeda# | 2.582 | 1910-1912 | |
| 94 | Caoimhín Henry# | 2.613 | 1910-1914 | |
| 94 | Medardo Salas# | 2.613 | 1913-1914 | |
| 96 | Matt Kirby | 2.622 | 1904-1912 | |
| 97 | Breandán Fitzpatrick# | 2.628 | 1914-1914 | |
| 98 | Jean Rivière# | 2.681 | 1912-1913 | |
| 99 | Luis Fernández# | 2.689 | 1907-1912 | |
| 100 | Desiderio Rodríguez# | 2.700 | 1914-1914 |
