League pitching register -- National League
Regular season -- as of 8/17/1877
| Primary |
| Name | Team | P | Age | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP |
| Joe Blong | CW | of | 23 | 3.44 | 1 | 9 | 0 | 10 | 10 | 9 | 0 | 81.0 | 111 | 94 | 31 | 17 | 35 | 1 | 3 |
| Tommy Bond | CW | sp | 21 | 5.61 | 15 | 35 | 0 | 51 | 50 | 50 | 0 | 444.2 | 630 | 600 | 277 | 322 | 60 | 18 | 40 |
| Amos Booth | SBB | ss | 23 | 3.68 | 11 | 21 | 2 | 37 | 30 | 23 | 1 | 264.0 | 376 | 237 | 108 | 60 | 64 | 3 | 32 |
| George Bradley | ION | sp | 24 | 3.30 | 18 | 9 | 3 | 40 | 8 | 8 | 0 | 226.1 | 270 | 195 | 83 | 58 | 45 | 2 | 15 |
| Candy Cummings | FY | sp | 28 | 4.71 | 18 | 8 | 4 | 42 | 8 | 8 | 0 | 193.0 | 289 | 201 | 101 | 53 | 30 | 2 | 22 |
| Jim Devlin | FY | sp | 28 | 2.35 | 23 | 11 | 0 | 52 | 52 | 18 | 0 | 341.0 | 361 | 186 | 89 | 34 | 105 | 2 | 21 |
| Terry Larkin | ION | sp | 0 | 2.68 | 22 | 11 | 0 | 52 | 52 | 20 | 0 | 315.1 | 371 | 212 | 94 | 47 | 74 | 2 | 33 |
| Jack Manning | PS | 1b | 23 | 8.02 | 9 | 20 | 0 | 38 | 30 | 15 | 0 | 248.0 | 566 | 441 | 221 | 95 | 47 | 6 | 38 |
| Bobby Mathews | MM | sp | 25 | 2.30 | 9 | 2 | 4 | 28 | 0 | 0 | 0 | 94.0 | 127 | 71 | 24 | 11 | 16 | 0 | 10 |
| Bobby Mitchell* | SBB | sp | 21 | 3.60 | 7 | 21 | 1 | 37 | 30 | 23 | 0 | 264.2 | 367 | 245 | 106 | 84 | 89 | 2 | 31 |
| Tricky Nichols | MM | sp | 26 | 3.07 | 20 | 15 | 0 | 60 | 60 | 11 | 1 | 310.2 | 346 | 235 | 106 | 53 | 86 | 2 | 20 |
| Laurie Reis | MM | sp | 18 | 1.55 | 13 | 1 | 3 | 33 | 0 | 0 | 0 | 128.0 | 97 | 64 | 22 | 24 | 40 | 1 | 14 |
| Al Spalding | PS | 1b | 26 | 8.00 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 9.0 | 19 | 16 | 8 | 2 | 2 | 1 | 1 |
| Will White | PS | sp | 22 | 3.29 | 14 | 16 | 4 | 44 | 29 | 21 | 0 | 271.0 | 328 | 218 | 99 | 67 | 70 | 5 | 17 |
| Secondary |
| Name | Team | P | Age | SB | CS | IW | HBP | WP | BK | SH | SF | H/9 | BB/9 | R/9 | K/9 | HR/9 | K/BB | WHIP |
| Joe Blong | CW | of | 23 | 14 | 4 | 0 | 0 | 19 | 0 | 8 | 13 | 12.3 | 1.9 | 14.2 | 3.9 | 0.1 | 2.1 | 1.58 |
| Tommy Bond | CW | sp | 21 | 68 | 24 | 1 | 21 | 28 | 0 | 25 | 46 | 12.8 | 6.5 | 19.7 | 1.2 | 0.4 | 0.2 | 2.14 |
| Amos Booth | SBB | ss | 23 | 32 | 14 | 1 | 0 | 31 | 0 | 12 | 18 | 12.8 | 2.0 | 14.9 | 2.2 | 0.1 | 1.1 | 1.65 |
| George Bradley | ION | sp | 24 | 19 | 9 | 1 | 0 | 39 | 0 | 7 | 15 | 10.7 | 2.3 | 13.0 | 1.8 | 0.1 | 0.8 | 1.45 |
| Candy Cummings | FY | sp | 28 | 15 | 6 | 1 | 0 | 27 | 0 | 10 | 12 | 13.5 | 2.5 | 15.9 | 1.4 | 0.1 | 0.6 | 1.77 |
| Jim Devlin | FY | sp | 28 | 30 | 12 | 0 | 0 | 11 | 0 | 2 | 22 | 9.5 | 0.9 | 10.4 | 2.8 | 0.1 | 3.1 | 1.16 |
| Terry Larkin | ION | sp | 0 | 26 | 8 | 1 | 0 | 14 | 0 | 9 | 19 | 10.6 | 1.3 | 11.9 | 2.1 | 0.1 | 1.6 | 1.33 |
| Jack Manning | PS | 1b | 23 | 39 | 17 | 0 | 0 | 108 | 0 | 10 | 30 | 20.5 | 3.4 | 24.0 | 1.7 | 0.2 | 0.5 | 2.67 |
| Bobby Mathews | MM | sp | 25 | 8 | 6 | 0 | 0 | 10 | 0 | 3 | 6 | 12.2 | 1.1 | 13.2 | 1.5 | 0.0 | 1.5 | 1.47 |
| Bobby Mitchell* | SBB | sp | 21 | 35 | 11 | 0 | 0 | 22 | 0 | 11 | 14 | 12.5 | 2.9 | 15.3 | 3.0 | 0.1 | 1.1 | 1.70 |
| Tricky Nichols | MM | sp | 26 | 35 | 12 | 0 | 0 | 30 | 0 | 10 | 14 | 10.0 | 1.5 | 11.6 | 2.5 | 0.1 | 1.6 | 1.28 |
| Laurie Reis | MM | sp | 18 | 12 | 3 | 0 | 0 | 14 | 0 | 0 | 9 | 6.8 | 1.7 | 8.5 | 2.8 | 0.1 | 1.7 | 0.95 |
| Al Spalding | PS | 1b | 26 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 19.0 | 2.0 | 21.0 | 2.0 | 1.0 | 1.0 | 2.33 |
| Will White | PS | sp | 22 | 38 | 11 | 1 | 1 | 32 | 0 | 11 | 17 | 10.9 | 2.2 | 13.2 | 2.3 | 0.2 | 1.0 | 1.46 |
| Analytical |
| Name | Team | P | Age | OPS | BIP | IPAVG | TBW | TBW/BF | TBWH | TBWH/BF | RC | RC27 | RCERA | CERA |
| Joe Blong | CW | of | 23 | .709 | 358 | .307 | 163 | .397 | 163 | .397 | 49.6 | 4.6 | 4.96 | 4.14 |
| Tommy Bond | CW | sp | 21 | .820 | 2028 | .302 | 1171 | .478 | 1192 | .487 | 375.4 | 6.6 | 6.84 | 6.99 |
| Amos Booth | SBB | ss | 23 | .734 | 1160 | .322 | 529 | .411 | 529 | .411 | 156.5 | 4.7 | 4.80 | 4.76 |
| George Bradley | ION | sp | 24 | .656 | 986 | .272 | 414 | .379 | 414 | .379 | 109.5 | 3.8 | 3.92 | 3.49 |
| Candy Cummings | FY | sp | 28 | .751 | 881 | .326 | 403 | .417 | 403 | .417 | 124.4 | 5.2 | 5.22 | 5.33 |
| Jim Devlin | FY | sp | 28 | .584 | 1357 | .265 | 495 | .330 | 495 | .330 | 120.3 | 2.9 | 2.86 | 2.41 |
| Terry Larkin | ION | sp | 0 | .610 | 1354 | .273 | 502 | .340 | 502 | .340 | 126.4 | 3.1 | 3.25 | 3.03 |
| Jack Manning | PS | 1b | 23 | .985 | 1313 | .427 | 797 | .546 | 797 | .546 | 318.5 | 10.1 | 10.40 | 10.93 |
| Bobby Mathews | MM | sp | 25 | .678 | 419 | .303 | 166 | .372 | 166 | .372 | 45.8 | 3.8 | 3.95 | 3.82 |
| Bobby Mitchell* | SBB | sp | 21 | .734 | 1142 | .320 | 553 | .420 | 553 | .420 | 162.1 | 4.8 | 4.96 | 4.82 |
| Tricky Nichols | MM | sp | 26 | .593 | 1282 | .268 | 471 | .331 | 471 | .331 | 119.3 | 3.0 | 3.11 | 2.86 |
| Laurie Reis | MM | sp | 18 | .470 | 474 | .203 | 148 | .275 | 148 | .275 | 27.3 | 1.7 | 1.73 | 1.47 |
| Al Spalding | PS | 1b | 26 | .994 | 45 | .400 | 29 | .580 | 29 | .580 | 11.2 | 10.1 | 10.09 | 9.85 |
| Will White | PS | sp | 22 | .671 | 1142 | .283 | 495 | .385 | 496 | .386 | 137.4 | 4.0 | 4.11 | 3.70 |
| Start |
| Name | Team | P | Age | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% | PCH/G | STR% |
| Joe Blong | CW | of | 23 | 10 | 9 | .900 | 0 | 5 | .500 | 49 | 4.9 | 1 | 0 | .000 | 142.1 | .643 |
| Tommy Bond | CW | sp | 21 | 50 | 50 | 1.000 | 0 | 21 | .420 | 329 | 6.6 | 0 | 0 | .000 | 161.1 | .558 |
| Amos Booth | SBB | ss | 23 | 30 | 23 | .767 | 1 | 16 | .533 | 184 | 6.1 | 2 | 0 | .000 | 110.6 | .655 |
| George Bradley | ION | sp | 24 | 8 | 8 | 1.000 | 0 | 6 | .750 | 82 | 10.3 | 0 | 0 | .000 | 83.9 | .654 |
| Candy Cummings | FY | sp | 28 | 8 | 8 | 1.000 | 0 | 6 | .750 | 82 | 10.3 | 0 | 0 | .000 | 71.6 | .657 |
| Jim Devlin | FY | sp | 28 | 52 | 18 | .346 | 0 | 30 | .577 | 542 | 10.4 | 25 | 12 | .480 | 89.4 | .700 |
| Terry Larkin | ION | sp | 0 | 52 | 20 | .385 | 0 | 21 | .404 | 525 | 10.1 | 37 | 14 | .378 | 91.3 | .681 |
| Jack Manning | PS | 1b | 23 | 30 | 15 | .500 | 0 | 5 | .167 | 236 | 7.9 | 6 | 1 | .167 | 125.6 | .639 |
| Bobby Mathews | MM | sp | 25 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 0 | .000 | 48.0 | .698 |
| Bobby Mitchell* | SBB | sp | 21 | 30 | 23 | .767 | 0 | 16 | .533 | 186 | 6.2 | 5 | 3 | .600 | 117.7 | .653 |
| Tricky Nichols | MM | sp | 26 | 60 | 11 | .183 | 1 | 24 | .400 | 569 | 9.5 | 50 | 26 | .520 | 78.3 | .678 |
| Laurie Reis | MM | sp | 18 | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 2 | 1.000 | 53.6 | .662 |
| Al Spalding | PS | 1b | 26 | 1 | 1 | 1.000 | 0 | 0 | .000 | 10 | 10.0 | 0 | 0 | .000 | 130.0 | .808 |
| Will White | PS | sp | 22 | 29 | 21 | .724 | 0 | 18 | .621 | 221 | 7.6 | 5 | 3 | .600 | 88.3 | .671 |
| Relief |
| Name | Team | P | Age | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF | PCH/G | STR% |
| Joe Blong | CW | of | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 10 | 0 | 0 | 142.1 | .643 |
| Tommy Bond | CW | sp | 21 | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 51 | 1 | 1 | 161.1 | .558 |
| Amos Booth | SBB | ss | 23 | 4 | 2 | .500 | 2 | .500 | 0 | 5 | 3 | .600 | 37 | 7 | 7 | 110.6 | .655 |
| George Bradley | ION | sp | 24 | 9 | 3 | .333 | 5 | .556 | 0 | 37 | 14 | .378 | 40 | 32 | 32 | 83.9 | .654 |
| Candy Cummings | FY | sp | 28 | 10 | 4 | .400 | 5 | .500 | 0 | 25 | 12 | .480 | 42 | 34 | 34 | 71.6 | .657 |
| Jim Devlin | FY | sp | 28 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 52 | 0 | 0 | 89.4 | .700 |
| Terry Larkin | ION | sp | 0 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 52 | 0 | 0 | 91.3 | .681 |
| Jack Manning | PS | 1b | 23 | 0 | 0 | .000 | 0 | .000 | 0 | 5 | 3 | .600 | 38 | 8 | 8 | 125.6 | .639 |
| Bobby Mathews | MM | sp | 25 | 6 | 4 | .667 | 2 | .333 | 0 | 21 | 15 | .714 | 28 | 28 | 23 | 48.0 | .698 |
| Bobby Mitchell* | SBB | sp | 21 | 3 | 1 | .333 | 2 | .667 | 0 | 2 | 0 | .000 | 37 | 7 | 7 | 117.7 | .653 |
| Tricky Nichols | MM | sp | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 60 | 0 | 0 | 78.3 | .678 |
| Laurie Reis | MM | sp | 18 | 4 | 3 | .750 | 1 | .250 | 0 | 34 | 13 | .382 | 33 | 33 | 26 | 53.6 | .662 |
| Al Spalding | PS | 1b | 26 | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 1 | 0 | 0 | 130.0 | .808 |
| Will White | PS | sp | 22 | 4 | 4 | 1.000 | 0 | .000 | 0 | 6 | 1 | .167 | 44 | 15 | 15 | 88.3 | .671 |