| SP | Carpenter, C.Carpenter, Chris # >> | 29 | 2004 | R | 90 | 13 | 13 | 5 | 5 | 4.45 | .299 | 1.25 | 8.7 | 2.6 | 8.0 | 83.0 | 80 | 41 | 41 | 14 | 24 | 74 | 1 | 0 | 0 | 0 | 7 | 2 | 1 | 4.35 |
| SP | Mussina, M.Mussina, Mike >> | 36 | 2004 | R | 42 | 12 | 12 | 3 | 7 | 6.14 | .341 | 1.51 | 10.4 | 3.3 | 6.3 | 73.1 | 84 | 53 | 50 | 10 | 27 | 51 | 1 | 0 | 0 | 1 | 3 | 3 | 2 | 4.62 |
| SP | Padilla, V.Padilla, Vicente >> | 27 | 2004 | R | 39 | 12 | 12 | 1 | 9 | 7.43 | .407 | 2.03 | 14.1 | 4.2 | 8.0 | 53.1 | 83 | 46 | 44 | 8 | 25 | 47 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 4.72 |
| SP | Garland, J.Garland, Jon >> | 25 | 2004 | R | 28 | 12 | 12 | 3 | 6 | 6.06 | .364 | 1.67 | 11.4 | 3.7 | 7.3 | 65.1 | 82 | 44 | 44 | 11 | 27 | 53 | 0 | 0 | 0 | 0 | 4 | 3 | 0 | 4.95 |
| SP | Marquis, J.Marquis, Jason >> | 26 | 2004 | R | 15 | 10 | 10 | 0 | 8 | 6.09 | .378 | 1.79 | 12.2 | 4.1 | 5.7 | 57.2 | 77 | 40 | 39 | 7 | 26 | 36 | 0 | 0 | 0 | 0 | 2 | 2 | 5 | 4.81 |
| RP | Guardado, E.Guardado, Eddie >> | 34 | 2004 | L | 91 | 33 | 0 | 1 | 0 | 3.74 | .279 | 1.16 | 7.4 | 3.2 | 9.2 | 45.2 | 37 | 19 | 19 | 5 | 16 | 46 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 3.47 |
| RP | Timlin, M.Timlin, Mike >> | 38 | 2004 | R | 40 | 30 | 0 | 0 | 2 | 3.22 | .259 | 1.02 | 7.0 | 2.3 | 7.3 | 36.1 | 28 | 13 | 13 | 5 | 9 | 29 | 0 | 1 | 1 | 0 | 0 | 1 | 3 | 4.03 |
| RP | Witasick, J.Witasick, Jay >> | 32 | 2004 | R | 29 | 23 | 0 | 1 | 3 | 6.49 | .358 | 1.59 | 8.7 | 5.9 | 8.3 | 26.1 | 25 | 19 | 19 | 2 | 17 | 24 | 0 | 2 | 0 | 0 | 0 | 2 | 1 | 4.35 |
| RP | Alfonseca, A.Alfonseca, Antonio >> | 32 | 2004 | R | 18 | 21 | 0 | 0 | 1 | 5.79 | .397 | 1.97 | 11.7 | 6.3 | 4.7 | 23.1 | 30 | 17 | 15 | 3 | 16 | 12 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 5.74 |
| SP | Rogers, K.Rogers, Kenny >> | 40 | 2004 | L | 2 | 12 | 0 | 2 | 0 | 10.64 | .416 | 2.09 | 11.9 | 7.0 | 5.3 | 22.0 | 29 | 26 | 26 | 3 | 17 | 13 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 6.05 |