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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Walter Ball | 1903-1906 | 3 | 4 | .429 | 4.40 | 34 | 2 | 2 | 0 | 1 | 77.2 | 78 | 38 | 7 | 25 | 41 |
| Colm Banks | 1915-1915 | 2 | 3 | .400 | 1.94 | 31 | 0 | 0 | 0 | 2 | 60.1 | 64 | 13 | 3 | 10 | 12 |
| Kevin Bannon | 1903-1903 | 0 | 0 | .000 | 6.00 | 2 | 0 | 0 | 0 | 0 | 6.0 | 8 | 4 | 0 | 4 | 2 |
| Ernesto Barajas | 1906-1915 | 0 | 0 | .000 | 3.38 | 1 | 0 | 0 | 0 | 0 | 2.2 | 4 | 1 | 0 | 1 | 0 |
| Gabriel Barajas | 1905-1908 | 7 | 11 | .389 | 4.79 | 56 | 16 | 4 | 1 | 3 | 188.0 | 190 | 100 | 10 | 112 | 92 |
| Séptimo Barrera | 1913-1915 | 0 | 0 | .000 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0.1 | 1 | 0 | 0 | 0 | 0 |
| Juan Barreto | 1906-1915 | 147 | 152 | .492 | 3.58 | 489 | 291 | 107 | 13 | 64 | 2569.2 | 2434 | 1021 | 27 | 1283 | 1554 |
| William Bell | 1903-1915 | 171 | 217 | .441 | 3.47 | 435 | 413 | 296 | 24 | 5 | 3486.1 | 3238 | 1345 | 160 | 1080 | 2363 |
| Germán Beltrán | 1906-1910 | 18 | 27 | .400 | 4.08 | 95 | 29 | 18 | 0 | 9 | 337.2 | 374 | 153 | 9 | 117 | 86 |
| Martín Beltrán | 1903-1915 | 9 | 16 | .360 | 3.69 | 133 | 15 | 4 | 0 | 6 | 324.0 | 321 | 133 | 14 | 172 | 200 |
| Nicolás Belén | 1914-1915 | 2 | 2 | .500 | 5.00 | 19 | 0 | 0 | 0 | 0 | 27.0 | 35 | 15 | 0 | 15 | 15 |
| Rodrigo Bernal | 1905-1915 | 125 | 164 | .433 | 4.17 | 380 | 351 | 105 | 16 | 1 | 2580.0 | 2642 | 1196 | 126 | 1142 | 1186 |
| Dan Bickham | 1905-1910 | 1 | 0 | 1.000 | 3.55 | 9 | 0 | 0 | 0 | 1 | 12.2 | 17 | 5 | 0 | 2 | 11 |
| Gustavo Boites | 1904-1909 | 1 | 3 | .250 | 4.85 | 26 | 0 | 0 | 0 | 5 | 42.2 | 58 | 23 | 2 | 17 | 25 |
| José Borges | 1903-1915 | 126 | 91 | .581 | 3.23 | 297 | 231 | 140 | 21 | 2 | 2055.2 | 2042 | 738 | 125 | 676 | 1441 |
| Roger Bragg | 1903-1903 | 4 | 5 | .444 | 6.78 | 14 | 10 | 3 | 0 | 1 | 87.2 | 106 | 66 | 29 | 27 | 45 |
| Jim Brown | 1903-1903 | 0 | 0 | .000 | 4.62 | 11 | 0 | 0 | 0 | 0 | 37.0 | 39 | 19 | 1 | 16 | 11 |
| John Brown | 1903-1915 | 6 | 10 | .375 | 3.05 | 72 | 0 | 0 | 0 | 1 | 177.1 | 170 | 60 | 4 | 100 | 124 |
| Mordecai Brown | 1903-1915 | 166 | 179 | .481 | 3.76 | 394 | 387 | 230 | 19 | 0 | 3172.1 | 3514 | 1327 | 151 | 957 | 1914 |
| Fred Buckingham | 1903-1904 | 0 | 0 | .000 | 2.31 | 5 | 0 | 0 | 0 | 0 | 11.2 | 12 | 3 | 1 | 3 | 3 |
| Harry Buckner | 1903-1915 | 146 | 176 | .453 | 3.65 | 356 | 355 | 237 | 18 | 0 | 2837.1 | 2943 | 1150 | 175 | 999 | 1769 |
| Radamés Bueno | 1903-1911 | 72 | 125 | .365 | 3.96 | 259 | 218 | 101 | 21 | 3 | 1823.2 | 1847 | 803 | 102 | 863 | 1067 |
| Al Burris | 1903-1915 | 37 | 48 | .435 | 3.11 | 312 | 0 | 0 | 0 | 99 | 483.2 | 515 | 167 | 15 | 162 | 313 |
| Elía Báez | 1903-1906 | 13 | 32 | .289 | 3.95 | 79 | 55 | 25 | 0 | 1 | 487.0 | 466 | 214 | 30 | 321 | 266 |
