| SP | Carpenter, C.Carpenter, Chris >> | 29 | 2004 | R | 73 | 33 | 33 | 13 | 14 | 4.51 | .307 | 1.31 | 9.1 | 2.7 | 6.7 | 215.2 | 217 | 112 | 108 | 35 | 65 | 161 | 3 | 0 | 0 | 2 | 13 | 5 | 7 | 4.60 |
| SP | Morris, M.Morris, Matt >> | 30 | 2004 | R | 35 | 32 | 32 | 13 | 11 | 4.42 | .291 | 1.21 | 8.4 | 2.5 | 6.8 | 207.2 | 193 | 105 | 102 | 27 | 58 | 156 | 2 | 0 | 0 | 0 | 17 | 5 | 7 | 4.10 |
| SP | Williams, W.Williams, Woody >> | 38 | 2004 | R | 29 | 32 | 32 | 16 | 8 | 4.16 | .291 | 1.21 | 8.6 | 2.3 | 6.3 | 207.2 | 198 | 100 | 96 | 33 | 53 | 144 | 1 | 0 | 0 | 1 | 17 | 5 | 8 | 4.52 |
| SP | Suppan, J.Suppan, Jeff >> | 29 | 2004 | R | 22 | 21 | 21 | 7 | 6 | 3.78 | .309 | 1.31 | 8.8 | 3.0 | 5.3 | 133.1 | 130 | 59 | 56 | 10 | 44 | 79 | 0 | 0 | 0 | 0 | 12 | 5 | 3 | 3.89 |
| RP | Isringhausen, J.Isringhausen, Jason >> | 32 | 2004 | R | 85 | 97 | 0 | 3 | 3 | 3.18 | .285 | 1.13 | 7.0 | 3.2 | 7.6 | 82.0 | 64 | 30 | 29 | 4 | 29 | 69 | 0 | 2 | 2 | 0 | 0 | 5 | 1 | 3.20 |
| CL | Calero, K.Calero, Kiko >> | 29 | 2004 | R | 97 | 61 | 0 | 7 | 5 | 1.87 | .214 | 0.77 | 5.1 | 1.9 | 9.0 | 72.1 | 41 | 15 | 15 | 5 | 15 | 72 | 0 | 38 | 3 | 0 | 0 | 3 | 0 | 2.65 |
| RP | Tavarez, J.Tavarez, Julian >> | 31 | 2004 | R | 54 | 69 | 0 | 1 | 0 | 3.38 | .301 | 1.26 | 8.0 | 3.4 | 8.8 | 53.1 | 47 | 20 | 20 | 4 | 20 | 52 | 0 | 1 | 2 | 0 | 0 | 2 | 2 | 3.26 |
| SP | Marquis, J.Marquis, Jason >> | 26 | 2004 | R | 17 | 34 | 0 | 10 | 3 | 3.20 | .298 | 1.24 | 7.4 | 3.8 | 6.9 | 107.0 | 88 | 38 | 38 | 11 | 45 | 82 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 4.15 |