| SP | Johnson, R.Johnson, Randy † >> | 41 | 2004 | L | 100 | 33 | 33 | 16 | 11 | 3.18 | .280 | 1.14 | 7.8 | 2.5 | 9.3 | 249.0 | 216 | 90 | 88 | 27 | 68 | 257 | 7 | 0 | 0 | 1 | 22 | 7 | 3 | 3.25 |
| SP | Burnett, A.Burnett, A.J. † >> | 27 | 2004 | R | 90 | 33 | 33 | 17 | 6 | 2.83 | .290 | 1.20 | 7.3 | 3.5 | 7.3 | 213.1 | 173 | 74 | 67 | 20 | 83 | 172 | 0 | 0 | 0 | 0 | 23 | 6 | 5 | 3.86 |
| SP | Rusch, G.Rusch, Glendon # >> | 30 | 2004 | L | 68 | 32 | 32 | 4 | 12 | 5.67 | .337 | 1.49 | 10.4 | 3.0 | 5.1 | 138.0 | 160 | 93 | 87 | 27 | 46 | 78 | 0 | 0 | 0 | 0 | 2 | 4 | 2 | 5.50 |
| SP | Wells, D.Wells, David # >> | 41 | 2004 | L | 65 | 32 | 32 | 15 | 7 | 4.20 | .309 | 1.31 | 9.6 | 2.3 | 5.6 | 203.1 | 216 | 102 | 95 | 30 | 51 | 126 | 0 | 0 | 0 | 0 | 18 | 6 | 1 | 4.52 |
| RP | Rivera, M.Rivera, Mariano >> | 35 | 2004 | R | 73 | 98 | 0 | 5 | 5 | 4.89 | .303 | 1.28 | 8.8 | 2.8 | 6.9 | 106.2 | 104 | 58 | 58 | 19 | 33 | 81 | 0 | 1 | 4 | 0 | 0 | 2 | 0 | 4.79 |
| RP | Foulke, K.Foulke, Keith >> | 32 | 2004 | R | 85 | 80 | 0 | 3 | 4 | 3.69 | .306 | 1.29 | 8.6 | 3.0 | 7.6 | 83.0 | 79 | 42 | 34 | 13 | 28 | 70 | 0 | 1 | 4 | 0 | 0 | 3 | 0 | 4.47 |
| CL | Gonzalez, M.Gonzalez, Mike >> | 26 | 2004 | L | 89 | 88 | 0 | 6 | 13 | 4.15 | .281 | 1.16 | 8.1 | 2.4 | 9.7 | 95.1 | 86 | 47 | 44 | 16 | 25 | 102 | 0 | 43 | 9 | 0 | 0 | 1 | 5 | 3.86 |
| RP | Smoltz, J.Smoltz, John >> | 37 | 2004 | R | 69 | 67 | 0 | 7 | 3 | 1.92 | .252 | 0.96 | 6.4 | 2.3 | 8.8 | 75.0 | 53 | 17 | 16 | 5 | 19 | 73 | 0 | 1 | 0 | 0 | 0 | 4 | 5 | 2.84 |
| RP | Embree, A.Embree, Alan >> | 34 | 2004 | L | 54 | 96 | 0 | 3 | 4 | 5.12 | .339 | 1.51 | 10.4 | 3.3 | 7.1 | 82.2 | 95 | 54 | 47 | 25 | 30 | 65 | 0 | 0 | 6 | 0 | 0 | 2 | 0 | 6.55 |