Team pitching -- 1884 Pittsburgh Alleghenys
Regular season -- as of 8/26/1884
| Primary |
| S | Name | P | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP | BF |
| | McGinnis | sp | 2.09 | 13 | 18 | 1 | 54 | 37 | 12 | 0 | 293.1 | 316 | 200 | 68 | 57 | 58 | 10 | 27 | 1323 |
| | Mullane | sp | 3.32 | 8 | 22 | 3 | 59 | 23 | 7 | 0 | 249.1 | 282 | 217 | 92 | 80 | 68 | 15 | 25 | 1164 |
| | Mathews | sp | 3.41 | 7 | 5 | 4 | 55 | 2 | 0 | 0 | 182.1 | 215 | 130 | 69 | 51 | 62 | 17 | 24 | 835 |
| | B. Sweeney | sp | 4.12 | 10 | 29 | 0 | 50 | 50 | 8 | 1 | 255.2 | 296 | 236 | 117 | 108 | 74 | 21 | 22 | 1229 |
|   | Total |   | 3.18 | 38 | 74 | 8 | 112 | 112 | 27 | 1 | 980.2 | 1109 | 783 | 346 | 296 | 262 | 63 | 98 | 4551 |
| 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% |
| | Pfeffer | 2b | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | .000 |
| | Swartwood | rf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | .000 |
| | McGinnis | sp | 42 | 7 | 8 | 6 | 19 | 0 | 9 | 18 | 1 | 9.7 | 1.7 | 11.6 | 1.8 | 0.3 | 4.0 | 83.1 | .661 |
| | Mullane | sp | 30 | 17 | 5 | 8 | 32 | 0 | 17 | 17 | 0 | 10.2 | 2.9 | 13.4 | 2.5 | 0.5 | 3.7 | 67.7 | .633 |
| | Mathews | sp | 15 | 10 | 6 | 2 | 10 | 0 | 4 | 11 | 2 | 10.6 | 2.5 | 13.2 | 3.1 | 0.8 | 5.8 | 52.3 | .640 |
| | B. Sweeney | sp | 31 | 16 | 8 | 8 | 25 | 0 | 16 | 14 | 0 | 10.4 | 3.8 | 14.5 | 2.6 | 0.7 | 5.1 | 88.0 | .616 |
|   | Total |   | 118 | 50 | 27 | 24 | 86 | 0 | 46 | 60 | 3 | 10.2 | 2.7 | 13.1 | 2.4 | 0.6 | 4.5 |   | .637 |
| Analytical |
| S | Name | P | OPS | WHIP | BIP | IPAVG | TBW | TBW/BF | TBWH | TBWH/BF | RC | RC27 | RCERA | CERA |
| | Pfeffer | 2b | .000 | 4.00 | 0 | .000 | 0 | .000 | 0 | .000 | 0.0 | 0.0 | 0.00 | 0.00 |
| | Swartwood | rf | .000 | 3.00 | 0 | .000 | 0 | .000 | 0 | .000 | 0.0 | 0.0 | 0.00 | 0.00 |
| | McGinnis | sp | .633 | 1.03 | 1192 | .257 | 481 | .364 | 487 | .368 | 123.7 | 3.4 | 3.42 | 3.03 |
| | Mullane | sp | .715 | 1.01 | 993 | .269 | 489 | .420 | 497 | .427 | 130.7 | 4.2 | 4.25 | 4.01 |
| | Mathews | sp | .749 | 1.04 | 703 | .282 | 377 | .451 | 379 | .454 | 99.4 | 4.5 | 4.42 | 4.32 |
| | B. Sweeney | sp | .754 | 1.11 | 1018 | .270 | 557 | .453 | 565 | .460 | 154.8 | 4.9 | 4.91 | 4.66 |
|   | Total |   | .708 | 1.05 | 3906 | .268 | 1904 | .418 | 1928 | .424 | 507.2 | 4.2 | 4.19 | 3.93 |
| Start |
| S | Name | P | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% |
| | McGinnis | sp | 37 | 12 | .324 | 0 | 21 | .568 | 231 | 6.2 | 28 | 13 | .464 |
| | Mullane | sp | 23 | 7 | .304 | 0 | 9 | .391 | 121 | 5.3 | 34 | 16 | .471 |
| | Mathews | sp | 2 | 0 | .000 | 0 | 1 | .500 | 7 | 3.5 | 7 | 0 | .000 |
| | B. Sweeney | sp | 50 | 8 | .160 | 1 | 16 | .320 | 294 | 5.9 | 51 | 25 | .490 |
|   | Total |   | 112 | 27 | .241 | 1 | 47 | .420 | 653 | 5.8 | 120 | 54 | .450 |
| Relief |
| S | Name | P | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF |
| | McGinnis | sp | 3 | 1 | .333 | 2 | .667 | 0 | 18 | 8 | .444 | 54 | 17 | 14 |
| | Mullane | sp | 7 | 3 | .429 | 4 | .571 | 0 | 48 | 25 | .521 | 59 | 36 | 21 |
| | Mathews | sp | 5 | 4 | .800 | 1 | .200 | 0 | 54 | 21 | .389 | 55 | 53 | 50 |
| | B. Sweeney | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 50 | 0 | 0 |
|   | Total |   | 15 | 8 | .533 | 7 | .467 | 0 | 120 | 54 | .450 | 112 | 106 | 85 |