| SP | Martinez, P.Martinez, Pedro >> | 33 | 2004 | R | 92 | 35 | 35 | 15 | 13 | 4.19 | .298 | 1.24 | 8.4 | 2.7 | 8.0 | 219.1 | 205 | 108 | 102 | 21 | 66 | 195 | 3 | 0 | 0 | 2 | 18 | 8 | 2 | 3.48 |
| SP | Hernandez, L.Hernandez, Livan >> | 29 | 2004 | R | 81 | 34 | 34 | 4 | 17 | 5.66 | .353 | 1.62 | 10.8 | 3.8 | 5.2 | 225.2 | 269 | 151 | 142 | 27 | 96 | 129 | 3 | 0 | 0 | 1 | 8 | 5 | 6 | 4.76 |
| SP | Lopez, R.Lopez, Rodrigo >> | 29 | 2004 | R | 65 | 34 | 33 | 6 | 8 | 5.15 | .334 | 1.48 | 10.5 | 2.8 | 6.1 | 145.0 | 169 | 84 | 83 | 22 | 45 | 99 | 0 | 0 | 0 | 0 | 1 | 4 | 5 | 4.62 |
| SP | Williams, J.Williams, Jerome >> | 23 | 2004 | R | 58 | 34 | 33 | 8 | 11 | 6.05 | .351 | 1.60 | 10.7 | 3.8 | 5.7 | 172.2 | 204 | 121 | 116 | 34 | 72 | 109 | 0 | 0 | 0 | 0 | 10 | 4 | 2 | 5.63 |
| SP | Mussina, M.Mussina, Mike >> | 36 | 2004 | R | 42 | 33 | 31 | 10 | 12 | 6.40 | .358 | 1.65 | 11.0 | 3.9 | 6.2 | 178.2 | 218 | 130 | 127 | 42 | 77 | 122 | 0 | 0 | 0 | 0 | 11 | 4 | 3 | 6.06 |
| RP | Calero, K.Calero, Kiko >> | 29 | 2004 | R | 100 | 103 | 0 | 9 | 7 | 3.16 | .273 | 1.11 | 7.1 | 2.9 | 7.8 | 145.1 | 115 | 54 | 51 | 14 | 46 | 125 | 0 | 4 | 2 | 0 | 0 | 3 | 2 | 3.54 |
| RP | Otsuka, A.Otsuka, Akinori >> | 32 | 2004 | R | 88 | 97 | 0 | 7 | 7 | 4.45 | .305 | 1.29 | 8.2 | 3.4 | 8.5 | 131.1 | 120 | 66 | 65 | 13 | 49 | 124 | 0 | 8 | 9 | 0 | 0 | 4 | 0 | 3.61 |
| RP | Mota, G.Mota, Guillermo >> | 31 | 2004 | R | 78 | 89 | 0 | 7 | 3 | 2.94 | .319 | 1.35 | 8.3 | 3.8 | 7.9 | 104.0 | 96 | 35 | 34 | 15 | 44 | 91 | 0 | 9 | 5 | 0 | 0 | 6 | 5 | 4.57 |
| RP | Duchscherer, J.Duchscherer, Justin >> | 27 | 2004 | R | 55 | 57 | 0 | 4 | 3 | 4.14 | .291 | 1.22 | 8.9 | 2.1 | 6.9 | 67.1 | 66 | 31 | 31 | 11 | 16 | 51 | 0 | 7 | 1 | 0 | 0 | 1 | 2 | 4.37 |