| SP | Loaiza, E.Loaiza, Esteban >> | 33 | 2003 | R | 93 | 11 | 11 | 5 | 4 | 3.36 | .314 | 1.37 | 9.4 | 3.0 | 5.9 | 75.0 | 78 | 32 | 28 | 11 | 25 | 49 | 1 | 0 | 0 | 0 | 7 | 0 | 1 | 4.60 |
| SP | Garcia, F.Garcia, Freddy >> | 28 | 2004 | R | 82 | 11 | 11 | 5 | 5 | 4.24 | .338 | 1.51 | 10.0 | 3.6 | 7.1 | 74.1 | 82 | 35 | 35 | 10 | 30 | 58 | 0 | 0 | 0 | 0 | 7 | 2 | 0 | 4.49 |
| SP | Colon, B.Colon, Bartolo >> | 31 | 2003 | R | 80 | 11 | 11 | 5 | 5 | 4.44 | .305 | 1.27 | 8.5 | 2.8 | 6.2 | 79.0 | 75 | 44 | 39 | 14 | 25 | 54 | 1 | 0 | 0 | 0 | 6 | 4 | 2 | 5.04 |
| SP | Garland, J.Garland, Jon >> | 25 | 2003 | R | 44 | 11 | 11 | 2 | 7 | 6.49 | .363 | 1.68 | 10.2 | 5.0 | 6.4 | 59.2 | 67 | 44 | 43 | 10 | 33 | 42 | 0 | 0 | 0 | 0 | 3 | 2 | 1 | 5.56 |
| SP | Buehrle, M.Buehrle, Mark >> | 25 | 2003 | L | 37 | 10 | 10 | 3 | 3 | 4.06 | .328 | 1.41 | 10.0 | 2.7 | 6.6 | 71.0 | 79 | 34 | 32 | 8 | 21 | 52 | 1 | 0 | 0 | 0 | 7 | 4 | 1 | 4.06 |
| RP | Marte, D.Marte, Damaso >> | 29 | 2003 | L | 97 | 30 | 0 | 2 | 1 | 4.55 | .272 | 1.12 | 5.0 | 5.3 | 7.0 | 27.2 | 15 | 15 | 14 | 3 | 16 | 21 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 4.67 |
| RP | Takatsu, S.Takatsu, Shingo >> | 36 | 2004 | R | 94 | 25 | 0 | 0 | 0 | 3.32 | .269 | 1.11 | 5.7 | 4.3 | 5.2 | 19.0 | 12 | 7 | 7 | 3 | 9 | 11 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 5.32 |
| RP | Wunsch, K.Wunsch, Kelly >> | 32 | 2003 | L | 90 | 19 | 0 | 1 | 1 | 0.66 | .146 | 0.51 | 1.4 | 3.5 | 7.6 | 13.2 | 2 | 1 | 1 | 0 | 5 | 11 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2.46 |
| RP | Sullivan, S.Sullivan, Scott >> | 33 | 2003 | R | 74 | 17 | 0 | 2 | 0 | 1.50 | .308 | 1.33 | 6.0 | 6.0 | 5.3 | 12.0 | 8 | 2 | 2 | 2 | 8 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.00 |
| RP | Schoeneweis, S.Schoeneweis, Scott >> | 31 | 2003 | L | 66 | 12 | 0 | 0 | 0 | 3.38 | .304 | 1.31 | 9.9 | 2.7 | 5.4 | 10.2 | 11 | 4 | 4 | 0 | 3 | 6 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 2.70 |