| SP | Perez, O.Perez, Oliver † >> | 23 | 2004 | L | 94 | 34 | 34 | 13 | 11 | 2.66 | .256 | 1.02 | 5.9 | 3.3 | 9.4 | 243.1 | 158 | 73 | 72 | 20 | 90 | 254 | 1 | 0 | 0 | 1 | 27 | 3 | 3 | 3.13 |
| SP | Schilling, C.Schilling, Curt >> | 38 | 2004 | R | 91 | 34 | 34 | 9 | 16 | 3.49 | .297 | 1.24 | 8.8 | 2.4 | 6.2 | 257.2 | 250 | 114 | 100 | 34 | 69 | 178 | 10 | 0 | 0 | 0 | 22 | 7 | 4 | 4.22 |
| SP | Clement, M.Clement, Matt # >> | 30 | 2004 | R | 78 | 33 | 33 | 14 | 9 | 5.15 | .326 | 1.42 | 8.7 | 4.2 | 9.0 | 197.2 | 190 | 116 | 113 | 33 | 91 | 197 | 0 | 0 | 0 | 0 | 17 | 6 | 11 | 4.65 |
| SP | Hernandez, L.Hernandez, Livan # >> | 29 | 2004 | R | 73 | 33 | 33 | 10 | 11 | 4.83 | .313 | 1.35 | 9.4 | 2.8 | 6.4 | 223.2 | 232 | 124 | 120 | 33 | 70 | 158 | 3 | 0 | 0 | 1 | 16 | 4 | 3 | 4.50 |
| SP | Escobar, K.Escobar, Kelvim >> | 28 | 2004 | R | 62 | 32 | 31 | 11 | 9 | 3.79 | .295 | 1.22 | 7.9 | 3.1 | 7.4 | 204.1 | 179 | 89 | 86 | 32 | 70 | 168 | 0 | 0 | 0 | 0 | 18 | 7 | 9 | 4.52 |
| RP | Wagner, B.Wagner, Billy >> | 33 | 2004 | L | 98 | 99 | 0 | 2 | 5 | 3.35 | .267 | 1.06 | 7.0 | 2.5 | 10.1 | 83.1 | 65 | 32 | 31 | 11 | 23 | 93 | 0 | 8 | 7 | 0 | 0 | 3 | 4 | 3.42 |
| RP | Otsuka, A.Otsuka, Akinori >> | 32 | 2004 | R | 82 | 71 | 0 | 9 | 1 | 2.98 | .325 | 1.42 | 8.2 | 4.6 | 10.8 | 66.1 | 60 | 22 | 22 | 4 | 34 | 79 | 0 | 7 | 5 | 0 | 0 | 2 | 0 | 3.03 |
| RP | Donnelly, B.Donnelly, Brendan >> | 33 | 2004 | R | 75 | 51 | 0 | 6 | 3 | 3.12 | .264 | 1.06 | 6.2 | 3.3 | 10.0 | 52.0 | 36 | 22 | 18 | 10 | 19 | 58 | 0 | 6 | 1 | 0 | 0 | 1 | 0 | 4.42 |
| RP | Marte, D.Marte, Damaso >> | 29 | 2004 | L | 61 | 53 | 0 | 3 | 2 | 2.19 | .285 | 1.14 | 7.3 | 2.9 | 7.7 | 49.1 | 40 | 15 | 12 | 6 | 16 | 42 | 0 | 4 | 0 | 0 | 0 | 3 | 2 | 4.04 |