| SP | Carpenter, C.Carpenter, Chris >> | 29 | 2004 | R | 78 | 25 | 25 | 12 | 7 | 3.39 | .283 | 1.16 | 8.2 | 2.2 | 7.1 | 177.2 | 162 | 70 | 67 | 21 | 44 | 140 | 0 | 0 | 0 | 0 | 19 | 4 | 2 | 3.77 |
| SP | Morris, M.Morris, Matt >> | 30 | 2004 | R | 39 | 25 | 25 | 11 | 6 | 4.20 | .309 | 1.32 | 8.7 | 3.2 | 5.8 | 158.2 | 153 | 78 | 74 | 21 | 57 | 101 | 0 | 0 | 0 | 0 | 13 | 3 | 1 | 4.59 |
| SP | Williams, W.Williams, Woody >> | 38 | 2004 | R | 34 | 25 | 25 | 9 | 7 | 4.78 | .338 | 1.51 | 9.9 | 3.8 | 6.2 | 150.2 | 165 | 85 | 80 | 14 | 63 | 103 | 0 | 0 | 0 | 0 | 13 | 3 | 5 | 4.16 |
| SP | Suppan, J.Suppan, Jeff >> | 29 | 2004 | R | 24 | 20 | 18 | 5 | 8 | 4.77 | .312 | 1.34 | 8.9 | 3.2 | 5.4 | 122.2 | 121 | 66 | 65 | 22 | 43 | 73 | 1 | 1 | 0 | 0 | 8 | 3 | 1 | 5.28 |
| RP | Isringhausen, J.Isringhausen, Jason >> | 32 | 2004 | R | 90 | 70 | 0 | 4 | 2 | 3.12 | .270 | 1.09 | 7.1 | 2.8 | 7.4 | 57.2 | 45 | 20 | 20 | 6 | 18 | 47 | 0 | 1 | 2 | 0 | 0 | 1 | 4 | 3.72 |
| CL | Calero, K.Calero, Kiko >> | 29 | 2004 | R | 99 | 54 | 0 | 4 | 4 | 1.53 | .231 | 0.90 | 5.4 | 2.8 | 8.2 | 58.2 | 35 | 12 | 10 | 2 | 18 | 53 | 0 | 33 | 2 | 0 | 0 | 0 | 3 | 2.55 |
| RP | Tavarez, J.Tavarez, Julian >> | 31 | 2004 | R | 62 | 54 | 0 | 5 | 2 | 3.23 | .220 | 0.85 | 5.7 | 1.9 | 7.3 | 47.1 | 30 | 17 | 17 | 7 | 10 | 38 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 3.96 |
| SP | Marquis, J.Marquis, Jason >> | 26 | 2004 | R | 20 | 26 | 1 | 9 | 1 | 4.27 | .343 | 1.55 | 10.0 | 4.1 | 6.6 | 92.2 | 102 | 44 | 44 | 4 | 42 | 67 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 3.51 |