| SP | Zambrano, C.Zambrano, Carlos >> | 23 | 2004 | R | 91 | 19 | 19 | 8 | 10 | 3.81 | .337 | 1.47 | 9.1 | 4.2 | 5.4 | 115.2 | 116 | 55 | 49 | 7 | 54 | 69 | 0 | 0 | 0 | 0 | 13 | 6 | 4 | 4.16 |
| SP | Colon, B.Colon, Bartolo >> | 31 | 2004 | R | 37 | 18 | 18 | 5 | 8 | 4.88 | .354 | 1.60 | 11.0 | 3.4 | 6.6 | 110.2 | 135 | 63 | 60 | 19 | 42 | 81 | 0 | 0 | 0 | 0 | 9 | 5 | 1 | 5.05 |
| SP | Kennedy, J.Kennedy, Joe >> | 25 | 2004 | L | 29 | 17 | 17 | 6 | 5 | 5.86 | .361 | 1.67 | 11.0 | 4.0 | 7.0 | 101.1 | 124 | 69 | 66 | 18 | 45 | 79 | 0 | 0 | 0 | 0 | 6 | 3 | 4 | 5.18 |
| RP | Guardado, E.Guardado, Eddie >> | 34 | 2004 | L | 91 | 50 | 0 | 2 | 1 | 2.02 | .260 | 1.04 | 7.0 | 2.4 | 9.5 | 71.1 | 55 | 17 | 16 | 5 | 19 | 75 | 0 | 4 | 1 | 0 | 0 | 1 | 0 | 2.65 |
| RP | Cordero, C.Cordero, Chad >> | 22 | 2004 | R | 46 | 50 | 0 | 0 | 3 | 3.08 | .270 | 1.11 | 6.5 | 3.5 | 7.6 | 73.0 | 53 | 26 | 25 | 10 | 28 | 62 | 0 | 5 | 2 | 0 | 0 | 0 | 0 | 4.23 |
| RP | Leicester, J.Leicester, Jon >> | 25 | 2004 | R | 27 | 37 | 0 | 2 | 2 | 3.38 | .306 | 1.33 | 9.0 | 2.9 | 5.0 | 40.0 | 40 | 16 | 15 | 3 | 13 | 22 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 3.85 |
| SP | Wakefield, T.Wakefield, Tim >> | 38 | 2004 | R | 24 | 3 | 1 | 0 | 1 | 4.82 | .243 | 0.96 | 6.0 | 3.0 | 3.0 | 9.1 | 6 | 5 | 5 | 2 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.22 |
| SP | Trachsel, S.Trachsel, Steve >> | 34 | 2004 | R | 26 | 21 | 0 | 3 | 2 | 5.46 | .299 | 1.28 | 8.7 | 3.1 | 5.6 | 29.2 | 28 | 18 | 18 | 8 | 10 | 18 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.38 |