| SP | Johnson, R.Johnson, Randy >> | 41 | 2004 | L | 100 | 12 | 12 | 2 | 4 | 4.11 | .310 | 1.34 | 8.9 | 3.2 | 7.6 | 85.1 | 84 | 39 | 39 | 8 | 30 | 72 | 1 | 0 | 0 | 0 | 6 | 1 | 3 | 3.62 |
| SP | Hernandez, L.Hernandez, Livan >> | 29 | 2004 | R | 81 | 12 | 12 | 2 | 6 | 7.04 | .364 | 1.69 | 11.3 | 4.0 | 5.8 | 70.1 | 88 | 55 | 55 | 7 | 31 | 45 | 1 | 0 | 0 | 0 | 3 | 2 | 1 | 4.43 |
| SP | Rusch, G.Rusch, Glendon >> | 30 | 2004 | L | 73 | 13 | 12 | 1 | 2 | 4.09 | .279 | 1.16 | 8.0 | 2.5 | 5.7 | 55.0 | 49 | 26 | 25 | 9 | 15 | 35 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4.67 |
| SP | Pineiro, J.Pineiro, Joel >> | 26 | 2004 | R | 43 | 13 | 12 | 5 | 2 | 4.39 | .310 | 1.32 | 8.6 | 3.4 | 7.7 | 69.2 | 66 | 34 | 34 | 3 | 26 | 59 | 0 | 0 | 0 | 0 | 6 | 2 | 0 | 3.07 |
| RP | Calero, K.Calero, Kiko >> | 29 | 2004 | R | 100 | 43 | 0 | 3 | 3 | 4.74 | .275 | 1.11 | 7.3 | 2.8 | 10.8 | 49.1 | 40 | 27 | 26 | 13 | 15 | 59 | 0 | 2 | 3 | 0 | 0 | 1 | 0 | 5.02 |
| RP | Isringhausen, J.Isringhausen, Jason >> | 32 | 2004 | R | 86 | 37 | 0 | 4 | 1 | 2.42 | .256 | 0.99 | 6.9 | 2.1 | 8.6 | 48.1 | 37 | 16 | 13 | 4 | 11 | 46 | 0 | 6 | 1 | 0 | 0 | 2 | 0 | 2.98 |
| RP | Smoltz, J.Smoltz, John >> | 37 | 2004 | R | 75 | 27 | 0 | 1 | 2 | 3.73 | .293 | 1.21 | 9.0 | 2.0 | 9.0 | 31.1 | 31 | 13 | 13 | 5 | 7 | 31 | 0 | 2 | 2 | 0 | 0 | 1 | 1 | 3.87 |
| RP | Shouse, B.Shouse, Brian >> | 36 | 2004 | L | 64 | 42 | 0 | 6 | 2 | 4.33 | .312 | 1.27 | 7.7 | 3.9 | 6.4 | 35.1 | 30 | 19 | 17 | 3 | 15 | 25 | 0 | 1 | 1 | 0 | 0 | 3 | 0 | 4.23 |
| RP | Bottalico, R.Bottalico, Ricky >> | 35 | 2004 | R | 57 | 22 | 0 | 5 | 2 | 2.96 | .268 | 1.10 | 8.0 | 2.0 | 6.3 | 27.1 | 24 | 10 | 9 | 2 | 6 | 19 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 3.22 |