Team pitching -- 1881 Philadelphia Southworths
Regular season -- as of 8/13/1881
| Primary |
| S | Name | P | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP | BF |
| | Derby | sp | 2.05 | 22 | 12 | 0 | 46 | 45 | 17 | 1 | 280.1 | 270 | 155 | 64 | 81 | 136 | 3 | 26 | 1239 |
| | Welch | sp | 2.78 | 7 | 4 | 7 | 34 | 3 | 3 | 0 | 119.2 | 137 | 73 | 37 | 35 | 46 | 1 | 11 | 544 |
| | Radbourn | sp | 3.02 | 16 | 11 | 0 | 41 | 25 | 11 | 1 | 229.2 | 243 | 148 | 77 | 62 | 85 | 7 | 23 | 1041 |
|   | Other |   | 2.24 | 6 | 2 | 2 | 16 | 7 | 5 | 0 | 84.1 | 77 | 42 | 21 | 16 | 35 | 1 | 8 | 366 |
|   | Total |   | 2.51 | 51 | 29 | 9 | 80 | 80 | 36 | 3 | 714.0 | 727 | 418 | 199 | 194 | 302 | 12 | 68 | 3190 |
| Secondary |
| S | Name | P | SB | CS | IW | HBP | WP | BK | SH | SF | CI | H/9 | BB/9 | R/9 | K/9 | HR/9 | K/BB | PCH/G | STR% |
| | Ferguson | 2b | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 | .000 |
| | Derby | sp | 28 | 12 | 8 | 0 | 5 | 0 | 12 | 16 | 1 | 8.7 | 2.6 | 11.3 | 4.4 | 0.1 | 2.5 | 94.5 | .644 |
| | Welch | sp | 16 | 6 | 4 | 0 | 4 | 0 | 9 | 11 | 0 | 10.3 | 2.6 | 12.9 | 3.5 | 0.1 | 1.3 | 55.3 | .622 |
| | Radbourn | sp | 24 | 8 | 5 | 0 | 15 | 0 | 19 | 6 | 0 | 9.5 | 2.4 | 12.0 | 3.3 | 0.3 | 1.8 | 88.6 | .638 |
|   | Other |   | 3 | 2 | 5 | 0 | 1 | 0 | 2 | 6 | 0 | 8.2 | 1.7 | 9.9 | 3.7 | 0.1 | 1.9 |   | .656 |
|   | Total |   | 71 | 28 | 22 | 0 | 25 | 0 | 42 | 39 | 1 | 9.2 | 2.4 | 11.6 | 3.8 | 0.2 | 1.9 |   | .640 |
| Analytical |
| S | Name | P | OPS | WHIP | BIP | IPAVG | TBW | TBW/BF | TBWH | TBWH/BF | RC | RC27 | RCERA | CERA |
| | Ferguson | 2b | .000 | 1.60 | 0 | .000 | 0 | .000 | 0 | .000 | 0.0 | 0.0 | 0.00 | 0.00 |
| | Derby | sp | .585 | 1.19 | 1019 | .262 | 418 | .337 | 418 | .337 | 97.4 | 2.8 | 2.81 | 2.62 |
| | Welch | sp | .671 | 1.22 | 462 | .294 | 206 | .379 | 206 | .379 | 56.4 | 3.9 | 3.81 | 3.55 |
| | Radbourn | sp | .644 | 1.15 | 887 | .266 | 392 | .377 | 392 | .377 | 97.5 | 3.4 | 3.44 | 3.12 |
|   | Other |   | .530 | 1.20 | 314 | .242 | 110 | .301 | 110 | .301 | 23.3 | 2.2 | 2.23 | 2.01 |
|   | Total |   | .612 | 1.20 | 2682 | .267 | 1126 | .353 | 1126 | .353 | 273.1 | 3.1 | 3.10 | 2.85 |
| Start |
| S | Name | P | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% |
| | Derby | sp | 45 | 17 | .378 | 1 | 24 | .533 | 340 | 7.6 | 30 | 18 | .600 |
| | Welch | sp | 3 | 3 | 1.000 | 0 | 3 | 1.000 | 21 | 7.0 | 1 | 0 | .000 |
| | Radbourn | sp | 25 | 11 | .440 | 1 | 14 | .560 | 180 | 7.2 | 29 | 9 | .310 |
|   | Other |   | 7 | 5 | .714 | 0 | 7 | 1.000 | 54 | 7.7 | 5 | 0 | .000 |
|   | Total |   | 80 | 36 | .450 | 3 | 48 | .600 | 595 | 7.4 | 65 | 27 | .415 |
| Relief |
| S | Name | P | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF |
| | Derby | sp | 0 | 0 | .000 | 0 | .000 | 0 | 1 | 0 | .000 | 46 | 1 | 1 |
| | Welch | sp | 10 | 7 | .700 | 3 | .300 | 0 | 36 | 16 | .444 | 34 | 31 | 30 |
| | Radbourn | sp | 1 | 0 | .000 | 1 | 1.000 | 2 | 17 | 11 | .647 | 41 | 16 | 5 |
|   | Other |   | 2 | 2 | 1.000 | 0 | .000 | 0 | 11 | 0 | .000 | 16 | 9 | 8 |
|   | Total |   | 13 | 9 | .692 | 4 | .308 | 2 | 65 | 27 | .415 | 80 | 57 | 44 |