| year | team name | league | level | mlb | # | age | w | l | era | g | gs | cg | sho | gr | gf | sv | ip | h | r | er | hr | bb | so | wp | bk | hb | whip | h9 | hr9 | bb9 | so9 | ra9 | so/bb |
| 1871 | Boston Red Stockings | MLB | MLB | BS1 | - | 20 | 19 | 10 | 3.36 | 31 | 31 | 22 | 1 | 0 | 0 | 0 | 257.1 | 333 | 272 | 96 | 2 | 38 | 23 | 0 | 0 | 0 | 1.44 | 11.65 | 0.07 | 1.33 | 0.80 | 9.51 | 0.61 |
| 1872 | Boston Red Stockings | MLB | MLB | BS1 | - | 21 | 38 | 8 | 1.98 | 48 | 48 | 41 | 3 | 0 | 0 | 0 | 404.2 | 412 | 224 | 89 | 0 | 27 | 27 | 0 | 1 | 0 | 1.08 | 9.16 | 0.00 | 0.60 | 0.60 | 4.98 | 1.00 |
| 1873 | Boston Red Stockings | MLB | MLB | BS1 | - | 22 | 41 | 14 | 2.46 | 60 | 55 | 48 | 1 | 5 | 0 | 2 | 497.2 | 643 | 414 | 136 | 5 | 28 | 31 | 0 | 0 | 0 | 1.35 | 11.63 | 0.09 | 0.51 | 0.56 | 7.49 | 1.11 |
| 1874 | Boston Red Stockings | MLB | MLB | BS1 | - | 23 | 52 | 16 | 2.35 | 71 | 69 | 65 | 4 | 2 | 0 | 0 | 616.1 | 753 | 402 | 161 | 1 | 23 | 11 | 0 | 0 | 0 | 1.26 | 11.00 | 0.01 | 0.34 | 0.16 | 5.87 | 0.48 |
| 1875 | Boston Red Stockings | MLB | MLB | BS1 | - | 24 | 55 | 5 | 1.52 | 72 | 63 | 52 | 7 | 9 | 0 | 8 | 575.0 | 571 | 241 | 97 | 1 | 14 | 9 | 0 | 1 | 0 | 1.02 | 8.94 | 0.02 | 0.22 | 0.14 | 3.77 | 0.64 |
| 1876 | Chicago White Stockings | NL | MLB | CHN | - | 25 | 47 | 12 | 1.75 | 61 | 60 | 53 | 8 | 1 | 1 | 0 | 528.2 | 542 | 226 | 103 | 6 | 26 | 39 | 1 | 0 | 0 | 1.07 | 9.23 | 0.10 | 0.44 | 0.66 | 3.85 | 1.50 |
| 1877 | Chicago White Stockings | NL | MLB | CHN | - | 26 | 1 | 0 | 3.27 | 4 | 1 | 0 | 0 | 3 | 2 | 1 | 11.0 | 17 | 12 | 4 | 0 | 0 | 2 | 0 | 0 | 0 | 1.55 | 13.91 | 0.00 | 0.00 | 1.64 | 9.82 | 0.00 |
| Tot: | MLB (7 yrs) | MLB | 253 | 65 | 2.14 | 347 | 327 | 281 | 24 | 3 | 20 | 11 | 2890.2 | 3271 | 1791 | 686 | 15 | 156 | 142 | 1 | 2 | 0 | 1.19 | 10.18 | 0.05 | 0.49 | 0.44 | 5.58 | 0.91 | ||||
| Tot: | NL (2 yrs) | NL | 48 | 12 | 1.78 | 65 | 61 | 53 | 8 | 3 | 4 | 1 | 539.2 | 559 | 238 | 107 | 6 | 26 | 41 | 1 | 0 | 0 | 1.08 | 9.32 | 0.10 | 0.43 | 0.68 | 3.97 | 1.58 | ||||
| Tot: | MLB (5 yrs) | MLB | 205 | 53 | 2.22 | 282 | 266 | 228 | 16 | 0 | 16 | 10 | 2351.0 | 2712 | 1553 | 579 | 9 | 130 | 101 | 0 | 2 | 0 | 1.21 | 10.38 | 0.03 | 0.50 | 0.39 | 5.95 | 0.78 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| year | team name | league | level | mlb | # | age | pos | tbc+ | g | ab | r | h | 2b | 3b | hr | rbi | sb | cs | bb | so | hbp | sh | sf | ibb | gdp | tb | pa | xbh | 1b | avg | obp | slg | ops | seca | iso | babip | bb% | so% | so/bb | ab/hr |
| 1871 | Boston Red Stockings | MLB | MLB | BS1 | - | 20 | P | 31 | 144 | 43 | 39 | 10 | 1 | 1 | 31 | 2 | 0 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 54 | 152 | 12 | 27 | .271 | .309 | .375 | .684 | .174 | .104 | .000 | 5.26 | 0.66 | 0.13 | 144.00 | |
| 1872 | Boston Red Stockings | MLB | MLB | BS1 | - | 21 | P | 48 | 237 | 60 | 84 | 11 | 5 | 0 | 47 | 3 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 105 | 240 | 16 | 68 | .354 | .363 | .443 | .806 | .114 | .089 | .000 | 1.25 | 0.42 | 0.33 | 0.00 | |
| 1873 | Boston Red Stockings | MLB | MLB | BS1 | - | 22 | P | 60 | 322 | 83 | 106 | 18 | 2 | 1 | 60 | 1 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 131 | 325 | 21 | 85 | .329 | .335 | .407 | .742 | .090 | .078 | .000 | 0.92 | 0.31 | 0.33 | 322.00 | |
| 1874 | Boston Red Stockings | MLB | MLB | BS1 | - | 23 | P | 71 | 362 | 80 | 119 | 13 | 1 | 0 | 54 | 2 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 134 | 365 | 14 | 105 | .329 | .334 | .370 | .704 | .052 | .041 | .000 | 0.82 | 0.00 | 0.00 | 0.00 | |
| 1875 | Boston Red Stockings | MLB | MLB | BS1 | - | 24 | P | 74 | 343 | 68 | 107 | 15 | 3 | 0 | 56 | 2 | 2 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 128 | 346 | 18 | 89 | .312 | .318 | .373 | .691 | .070 | .061 | .000 | 0.87 | 0.87 | 1.00 | 0.00 | |
| 1876 | Chicago White Stockings | NL | MLB | CHN | - | 25 | P | 66 | 292 | 54 | 91 | 14 | 2 | 0 | 44 | 0 | 0 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 109 | 298 | 16 | 75 | .312 | .326 | .373 | .699 | .000 | .061 | .000 | 2.01 | 1.01 | 0.50 | 0.00 | |
| 1877 | Chicago White Stockings | NL | MLB | CHN | - | 26 | 1B | 60 | 254 | 29 | 65 | 7 | 6 | 0 | 35 | 0 | 0 | 3 | 16 | 0 | 0 | 0 | 0 | 0 | 84 | 257 | 13 | 52 | .256 | .265 | .331 | .596 | .000 | .075 | .000 | 1.17 | 6.23 | 5.33 | 0.00 | |
| 1878 | Chicago White Stockings | NL | MLB | CHN | - | 27 | 2B | 1 | 4 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 0 | 2 | .500 | .500 | .500 | 1.000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Tot: | MLB (8 yrs) | MLB | 411 | 1958 | 417 | 613 | 88 | 20 | 2 | 327 | 10 | 3 | 29 | 25 | 0 | 0 | 0 | 0 | 0 | 747 | 1987 | 110 | 503 | .313 | .323 | .382 | .705 | .087 | .068 | .316 | 1.46 | 1.26 | 0.86 | 979.00 | ||||||
| Tot: | NL (3 yrs) | NL | 127 | 550 | 83 | 158 | 21 | 8 | 0 | 79 | 0 | 0 | 9 | 19 | 0 | 0 | 0 | 0 | 0 | 195 | 559 | 29 | 129 | .287 | .299 | .355 | .653 | .084 | .067 | .298 | 1.61 | 3.40 | 2.11 | |||||||
| Tot: | MLB (5 yrs) | MLB | 284 | 1408 | 334 | 455 | 67 | 12 | 2 | 248 | 10 | 3 | 20 | 6 | 0 | 0 | 0 | 0 | 0 | 552 | 1428 | 81 | 374 | .323 | .333 | .392 | .725 | .088 | .069 | .324 | 1.40 | 0.42 | 0.30 | 704.00 | ||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 40 | 57 | 65 | 50 | 65 | 78 | .709 |