| SP | Zambrano, C.Zambrano, Carlos # >> | 23 | 2004 | R | 91 | 27 | 27 | 5 | 13 | 4.36 | .298 | 1.25 | 8.4 | 2.8 | 6.9 | 177.2 | 166 | 90 | 86 | 19 | 56 | 135 | 1 | 0 | 0 | 0 | 13 | 4 | 6 | 3.89 |
| SP | Williams, J.Williams, Jerome >> | 23 | 2004 | R | 58 | 26 | 26 | 6 | 14 | 6.05 | .328 | 1.46 | 9.5 | 3.6 | 6.3 | 131.0 | 139 | 90 | 88 | 21 | 52 | 91 | 1 | 0 | 0 | 0 | 8 | 1 | 3 | 4.91 |
| SP | Padilla, V.Padilla, Vicente >> | 27 | 2004 | R | 39 | 26 | 26 | 10 | 5 | 3.50 | .311 | 1.28 | 8.6 | 3.0 | 5.9 | 136.1 | 130 | 62 | 53 | 13 | 45 | 89 | 0 | 0 | 0 | 0 | 8 | 10 | 5 | 4.15 |
| SP | Wilson, P.Wilson, Paul >> | 31 | 2004 | R | 21 | 25 | 24 | 10 | 8 | 4.77 | .326 | 1.42 | 9.1 | 3.7 | 5.9 | 151.0 | 153 | 80 | 80 | 17 | 62 | 99 | 2 | 0 | 0 | 1 | 13 | 4 | 3 | 4.46 |
| RP | Gonzalez, M.Gonzalez, Mike >> | 26 | 2004 | L | 92 | 68 | 0 | 7 | 5 | 4.30 | .311 | 1.31 | 9.3 | 2.6 | 10.0 | 102.2 | 105 | 51 | 49 | 13 | 29 | 113 | 0 | 3 | 5 | 0 | 0 | 5 | 9 | 3.44 |
| RP | Osuna, A.Osuna, Antonio # >> | 31 | 2004 | R | 62 | 69 | 0 | 2 | 4 | 4.74 | .315 | 1.35 | 9.9 | 2.3 | 8.1 | 95.0 | 104 | 54 | 50 | 19 | 24 | 85 | 0 | 5 | 5 | 0 | 0 | 3 | 0 | 4.66 |
| RP | Betancourt, R.Betancourt, Rafael >> | 29 | 2004 | R | 23 | 51 | 0 | 5 | 1 | 3.10 | .296 | 1.24 | 8.4 | 2.8 | 10.6 | 58.0 | 54 | 24 | 20 | 7 | 18 | 68 | 0 | 3 | 3 | 0 | 0 | 1 | 6 | 3.21 |
| SP | Maroth, M.Maroth, Mike >> | 27 | 2004 | L | 8 | 26 | 1 | 3 | 4 | 5.53 | .330 | 1.43 | 10.4 | 2.7 | 5.2 | 40.2 | 46 | 27 | 25 | 10 | 12 | 23 | 0 | 5 | 0 | 0 | 0 | 2 | 1 | 6.15 |