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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ignacio Ramírez | 1889-1896 | 69 | 106 | .394 | 4.64 | 218 | 194 | 103 | 6 | 0 | 1538.2 | 1653 | 793 | 90 | 953 | 718 |
| Eduardo Resto | 1878-1887 | 72 | 70 | .507 | 3.26 | 186 | 150 | 99 | 3 | 4 | 1296.1 | 1376 | 469 | 47 | 246 | 389 |
| Justino Rivera | 1890-1897 | 2 | 2 | .500 | 5.88 | 16 | 0 | 0 | 0 | 1 | 33.2 | 40 | 22 | 0 | 20 | 7 |
| Efraín Rodríguez | 1882-1882 | 5 | 2 | .714 | 2.09 | 9 | 7 | 6 | 0 | 0 | 73.1 | 63 | 17 | 4 | 7 | 13 |
| Fernando Rodríguez | 1887-1894 | 86 | 54 | .614 | 2.50 | 177 | 145 | 112 | 10 | 3 | 1273.2 | 1132 | 354 | 12 | 404 | 450 |
| Induciomaro Rodríguez | 1889-1897 | 8 | 8 | .500 | 4.38 | 66 | 0 | 0 | 0 | 2 | 125.1 | 148 | 61 | 3 | 55 | 53 |
| Miguel Rodríguez | 1897-1897 | 6 | 15 | .286 | 6.32 | 26 | 26 | 10 | 0 | 0 | 176.2 | 243 | 124 | 7 | 121 | 53 |
| Zenobio Rodríguez | 1889-1897 | 146 | 122 | .545 | 2.95 | 308 | 284 | 206 | 17 | 0 | 2463.1 | 2593 | 807 | 13 | 571 | 840 |
| Aurelio Rojas | 1882-1894 | 6 | 6 | .500 | 1.97 | 86 | 0 | 0 | 0 | 0 | 128.0 | 144 | 28 | 1 | 42 | 44 |
| Orestes Romero | 1883-1897 | 24 | 13 | .649 | 2.07 | 169 | 0 | 0 | 0 | 44 | 221.1 | 200 | 51 | 0 | 50 | 93 |
| José Román | 1883-1886 | 9 | 6 | .600 | 3.69 | 28 | 9 | 2 | 0 | 0 | 112.1 | 117 | 46 | 12 | 47 | 48 |
| Ryan Rowsell | 1894-1894 | 7 | 24 | .226 | 7.19 | 40 | 32 | 10 | 0 | 0 | 222.2 | 351 | 178 | 63 | 78 | 78 |
| Nicolás Ruiz | 1884-1891 | 40 | 73 | .354 | 5.57 | 153 | 128 | 41 | 0 | 0 | 896.1 | 925 | 555 | 76 | 782 | 447 |
