| SP | Hudson, T.Hudson, Tim $$ >> | 28 | 2003 | R | 93 | 33 | 33 | 16 | 10 | 3.22 | .311 | 1.27 | 8.2 | 3.2 | 6.2 | 226.2 | 206 | 84 | 81 | 25 | 81 | 155 | 2 | 0 | 0 | 1 | 26 | 20 | 4 | 4.41 |
| SP | Morris, M.Morris, Matt >> | 29 | 2003 | R | 77 | 32 | 32 | 9 | 14 | 6.71 | .352 | 1.61 | 11.2 | 3.4 | 6.1 | 170.1 | 211 | 130 | 127 | 33 | 64 | 115 | 0 | 0 | 0 | 0 | 11 | 2 | 2 | 5.34 |
| SP | Hernandez, L.Hernandez, Livan # >> | 28 | 2003 | R | 72 | 32 | 32 | 16 | 10 | 3.82 | .283 | 1.15 | 7.7 | 2.7 | 6.5 | 219.1 | 188 | 96 | 93 | 26 | 65 | 158 | 7 | 0 | 0 | 5 | 18 | 7 | 4 | 4.09 |
| SP | Halladay, R.Halladay, Roy $$ >> | 26 | 2003 | R | 85 | 32 | 32 | 14 | 13 | 3.99 | .287 | 1.14 | 8.8 | 1.6 | 6.4 | 225.1 | 219 | 107 | 100 | 28 | 39 | 161 | 5 | 0 | 0 | 1 | 19 | 14 | 3 | 3.89 |
| SP | Ponson, S.Ponson, Sidney # >> | 27 | 2003 | R | 53 | 30 | 30 | 7 | 16 | 6.05 | .352 | 1.61 | 11.1 | 3.5 | 5.9 | 171.0 | 210 | 126 | 115 | 28 | 66 | 113 | 0 | 0 | 0 | 0 | 12 | 3 | 3 | 5.02 |
| CL | Riske, D.Riske, David $$ >> | 27 | 2003 | R | 94 | 58 | 0 | 2 | 1 | 2.62 | .280 | 1.13 | 7.0 | 3.3 | 9.8 | 58.1 | 45 | 17 | 17 | 8 | 21 | 63 | 0 | 41 | 2 | 0 | 0 | 2 | 1 | 3.81 |
| SU | Marte, D.Marte, Damaso >> | 28 | 2003 | L | 90 | 54 | 0 | 1 | 3 | 3.09 | .320 | 1.36 | 7.7 | 4.6 | 6.5 | 55.1 | 47 | 20 | 19 | 3 | 28 | 40 | 0 | 1 | 4 | 0 | 0 | 3 | 0 | 3.95 |
| RP | Farnsworth, K.Farnsworth, Kyle >> | 27 | 2003 | R | 82 | 76 | 0 | 5 | 4 | 4.50 | .338 | 1.50 | 8.9 | 4.6 | 9.4 | 62.0 | 61 | 31 | 31 | 7 | 32 | 65 | 0 | 2 | 5 | 0 | 0 | 2 | 1 | 4.02 |
| RP | Percival, T.Percival, Troy >> | 34 | 2003 | R | 80 | 52 | 0 | 5 | 3 | 2.65 | .298 | 1.20 | 5.8 | 4.9 | 7.9 | 51.0 | 33 | 16 | 15 | 5 | 28 | 45 | 0 | 4 | 1 | 0 | 0 | 4 | 0 | 4.39 |
| RP | Isringhausen, J.Isringhausen, Jason >> | 31 | 2003 | R | 77 | 31 | 0 | 1 | 1 | 2.22 | .292 | 1.20 | 7.4 | 3.5 | 5.5 | 28.1 | 23 | 8 | 7 | 1 | 11 | 17 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 3.54 |
| RP | Stanton, M.Stanton, Mike >> | 36 | 2003 | L | 56 | 75 | 0 | 2 | 2 | 3.96 | .327 | 1.46 | 7.9 | 5.2 | 9.0 | 50.0 | 44 | 22 | 22 | 5 | 29 | 50 | 0 | 2 | 1 | 0 | 0 | 0 | 4 | 4.04 |