| SP | Arrieta, J.Arrieta, Jake >> | 29 | 2015 | R | 93 | 38 | 38 | 14 | 12 | 3.45 | .290 | 1.21 | 8.2 | 2.7 | 7.8 | 239.2 | 217 | 100 | 92 | 19 | 73 | 207 | 3 | 0 | 0 | 0 | 27 | 4 | 8 | 3.27 |
| SP | Richard, J.Richard, J.R. >> | 30 | 1980 | R | 90 | 37 | 37 | 13 | 10 | 3.94 | .319 | 1.39 | 8.0 | 4.6 | 7.8 | 221.2 | 196 | 100 | 97 | 16 | 113 | 192 | 1 | 0 | 0 | 1 | 21 | 3 | 3 | 3.78 |
| SP | Alexander, P.Alexander, Pete >> | 28 | 1915 | R | 88 | 35 | 35 | 16 | 8 | 3.72 | .289 | 1.21 | 8.4 | 2.6 | 5.0 | 222.2 | 207 | 95 | 92 | 16 | 63 | 123 | 7 | 0 | 0 | 3 | 22 | 2 | 3 | 3.71 |
| SP | Mathewson, C.Mathewson, Christy >> | 28 | 1908 | R | 82 | 34 | 34 | 13 | 10 | 4.55 | .315 | 1.35 | 9.7 | 2.5 | 5.4 | 195.2 | 211 | 107 | 99 | 11 | 54 | 118 | 6 | 0 | 0 | 0 | 18 | 5 | 5 | 3.43 |
| CL | Adams, M.Adams, Mike † >> | 31 | 2009 | R | 99 | 76 | 0 | 5 | 9 | 3.46 | .269 | 1.10 | 6.8 | 3.3 | 9.3 | 80.2 | 60 | 32 | 31 | 10 | 29 | 83 | 0 | 28 | 4 | 0 | 0 | 0 | 2 | 3.64 |
| RP | Devine, J.Devine, Joey >> | 25 | 2008 | R | 80 | 88 | 0 | 4 | 2 | 3.02 | .272 | 1.08 | 6.3 | 3.5 | 8.6 | 86.1 | 60 | 31 | 29 | 8 | 33 | 82 | 0 | 4 | 2 | 0 | 0 | 4 | 0 | 3.59 |
| RP | Balfour, G.Balfour, Grant >> | 31 | 2008 | R | 74 | 67 | 0 | 4 | 3 | 2.86 | .291 | 1.22 | 6.4 | 4.6 | 9.1 | 72.1 | 51 | 25 | 23 | 7 | 37 | 73 | 0 | 2 | 3 | 0 | 0 | 1 | 1 | 3.82 |
| SP | Reulbach, E.Reulbach, Ed >> | 24 | 1906 | R | 61 | 15 | 0 | 2 | 1 | 5.94 | .351 | 1.62 | 9.7 | 4.9 | 4.1 | 50.0 | 54 | 33 | 33 | 5 | 27 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.00 |