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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Flaminio Martínez | 0.000 | 1880 | |
| 1 | Héctor López | 0.000 | 1882 | |
| 3 | Fructuoso Noa | 0.667 | 1888 | |
| 4 | Jorge Vélez# | 0.800 | 1888 | |
| 5 | Cleto Correa# | 0.973 | 1890 | |
| 6 | Héctor López | 1.000 | 1880 | |
| 6 | Constancio Álvarez# | 1.000 | 1887 | |
| 8 | Zeferino Duque | 1.038 | 1882 | |
| 8 | Gregorio Orantez | 1.038 | 1885 | |
| 10 | Romualdo Baca | 1.174 | 1888 | |
| 11 | Fructuoso Noa | 1.200 | 1892 | |
| 11 | Ignacio Barbosa | 1.200 | 1879 | |
| 13 | Flaminio Martínez | 1.324 | 1887 | |
| 14 | Juan Padilla | 1.350 | 1879 | |
| 15 | Armando Sorto# | 1.373 | 1892 | |
| 16 | Romualdo Baca | 1.440 | 1890 | |
| 17 | Heliodoro Pérez | 1.452 | 1878 | |
| 18 | Juan Martínez# | 1.459 | 1890 | |
| 19 | Juan Padilla | 1.570 | 1878 | |
| 20 | Ernesto Cruz | 1.588 | 1886 | |
| 21 | Nemesio Hinojos# | 1.653 | 1890 | |
| 22 | Jorge Vélez# | 1.688 | 1893 | |
| 23 | Romualdo Baca | 1.800 | 1894 | |
| 24 | Jorge Vélez# | 1.827 | 1892 | |
| 25 | Ernesto Cruz | 1.929 | 1883 | |
| 26 | Flaminio Martínez | 1.957 | 1884 | |
| 27 | Jorge Vélez# | 1.971 | 1889 | |
| 28 | Flaminio Martínez | 1.976 | 1881 | |
| 29 | Zeferino Duque | 2.000 | 1888 | |
| 29 | Heliodoro Pérez | 2.000 | 1886 | |
| 31 | Héctor López | 2.025 | 1883 | |
| 32 | Héctor López | 2.077 | 1878 | |
| 32 | Héctor López | 2.077 | 1885 | |
| 34 | Flaminio Martínez | 2.182 | 1888 | |
| 35 | Jesus Umana | 2.250 | 1881 | |
| 35 | Zeferino Duque | 2.250 | 1889 | |
| 37 | Ricardo Sánchez | 2.302 | 1889 | |
| 38 | Alfredo Cruz# | 2.314 | 1894 | |
| 39 | Ignacio Barbosa | 2.333 | 1881 | |
| 40 | Pandolfo Ortega# | 2.382 | 1887 | |
| 40 | José Barreto# | 2.382 | 1892 | |
| 42 | Flaminio Martínez | 2.455 | 1885 | |
| 43 | Constancio Álvarez# | 2.500 | 1895 | |
| 44 | Zenobio Rodríguez# | 2.547 | 1891 | |
| 44 | Raúl Torres | 2.547 | 1890 | |
| 46 | José Barreto# | 2.571 | 1896 | |
| 46 | Ángel González# | 2.571 | 1897 | |
| 48 | Ricardo Sánchez | 2.628 | 1888 | |
| 49 | Fructuoso Noa | 2.647 | 1882 | |
| 49 | Ludovico Andrade | 2.647 | 1884 | |
| 49 | Romualdo Baca | 2.647 | 1887 | |
| 52 | Bernal Echevana | 2.769 | 1892 | |
| 53 | Fabián Mendoza# | 2.812 | 1892 | |
| 54 | Jesus Umana | 2.919 | 1880 | |
| 55 | Heliodoro Pérez | 2.925 | 1887 | |
| 56 | Héctor López | 2.945 | 1879 | |
| 57 | Afrodisio García | 3.000 | 1891 | |
| 57 | Armando Sorto# | 3.000 | 1897 | |
| 59 | Eugenio Mendoza# | 3.028 | 1892 | |
| 60 | Flaminio Martínez | 3.057 | 1889 | |
| 61 | Cleto Correa# | 3.068 | 1891 | |
| 62 | José Barreto# | 3.115 | 1894 | |
| 63 | Alberto López# | 3.153 | 1891 | |
| 64 | Jorge Vélez# | 3.176 | 1894 | |
| 64 | Héctor López | 3.176 | 1881 | |
| 66 | Zenobio Rodríguez# | 3.240 | 1896 | |
| 67 | Pío Martínez | 3.273 | 1887 | |
| 68 | Flaminio Martínez | 3.316 | 1882 | |
| 69 | Heliodoro Pérez | 3.375 | 1885 | |
| 70 | Afrodisio García | 3.416 | 1893 | |
| 71 | Armando Sorto# | 3.441 | 1895 | |
| 72 | Fructuoso Noa | 3.484 | 1893 | |
| 73 | Bernal Echevana | 3.558 | 1894 | |
| 74 | Armando Sorto# | 3.566 | 1893 | |
| 75 | Heliodoro Pérez | 3.574 | 1883 | |
| 76 | Frank Groves# | 3.600 | 1897 | |
| 77 | Curcio Cruz# | 3.706 | 1894 | |
| 77 | Eugenio Mendoza# | 3.706 | 1891 | |
| 79 | Egidio Sánchez# | 3.738 | 1895 | |
| 80 | Ernesto Cruz | 3.913 | 1884 | |
| 81 | Héctor López | 3.971 | 1884 | |
| 81 | Matías Villarreal# | 3.971 | 1896 | |
| 83 | Ignacio Ramírez# | 4.000 | 1890 | |
| 84 | Flaminio Martínez | 4.014 | 1883 | |
| 85 | Francisco Cueva# | 4.097 | 1891 | |
| 86 | Ángel González# | 4.171 | 1896 | |
| 87 | Ramón Melgar# | 4.200 | 1897 | |
| 88 | Diomedes Vásquez# | 4.235 | 1896 | |
| 89 | Zenobio Rodríguez# | 4.263 | 1893 | |
| 90 | Ricardo Figueroa | 4.388 | 1888 | |
| 91 | Jorge Vélez# | 4.500 | 1891 | |
| 91 | Esteban Quiros# | 4.500 | 1897 | |
| 93 | José Barreto# | 4.547 | 1895 | |
| 94 | Pandolfo Ortega# | 4.673 | 1893 | |
| 95 | Ricardo Figueroa | 4.696 | 1889 | |
| 96 | Ángel González# | 4.720 | 1895 | |
| 97 | Juan Echeverría# | 4.909 | 1893 | |
| 98 | Brent Mattern# | 5.062 | 1897 | |
| 98 | Pandolfo Ortega# | 5.062 | 1886 | |
| 100 | Ernesto Cruz | 5.087 | 1878 |
