| SP | Alvarez, W.Alvarez, Wilson >> | 33 | 2003 | L | 95 | 14 | 14 | 2 | 5 | 4.60 | .310 | 1.35 | 9.3 | 2.9 | 7.6 | 58.2 | 60 | 31 | 30 | 6 | 19 | 49 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3.64 |
| SP | Villone, R.Villone, Ron >> | 33 | 2003 | L | 63 | 14 | 14 | 5 | 5 | 4.08 | .348 | 1.56 | 9.5 | 4.6 | 5.6 | 75.0 | 79 | 36 | 34 | 7 | 38 | 47 | 0 | 0 | 0 | 0 | 5 | 3 | 0 | 4.60 |
| SP | Zambrano, V.Zambrano, Victor >> | 28 | 2003 | R | 33 | 13 | 13 | 1 | 7 | 7.19 | .385 | 1.83 | 11.4 | 5.1 | 7.6 | 56.1 | 71 | 48 | 45 | 4 | 32 | 47 | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 4.13 |
| SP | Johnson, R.Johnson, Randy >> | 40 | 2003 | L | 23 | 12 | 12 | 3 | 5 | 4.62 | .304 | 1.31 | 9.7 | 2.1 | 8.5 | 74.0 | 80 | 39 | 38 | 13 | 17 | 70 | 0 | 0 | 0 | 0 | 6 | 0 | 1 | 4.08 |
| RP | Mantei, M.Mantei, Matt # >> | 30 | 2003 | R | 92 | 37 | 0 | 5 | 2 | 4.86 | .271 | 1.10 | 7.6 | 2.4 | 10.0 | 53.2 | 45 | 29 | 29 | 11 | 14 | 59 | 0 | 2 | 2 | 0 | 0 | 1 | 3 | 4.32 |
| RP | Sullivan, S.Sullivan, Scott >> | 32 | 2003 | R | 66 | 35 | 0 | 2 | 3 | 4.53 | .323 | 1.41 | 9.5 | 3.4 | 7.9 | 51.2 | 54 | 26 | 26 | 11 | 19 | 45 | 0 | 4 | 0 | 0 | 0 | 1 | 1 | 5.22 |
| RP | Tavarez, J.Tavarez, Julian >> | 30 | 2003 | R | 45 | 31 | 0 | 3 | 1 | 3.26 | .301 | 1.27 | 9.9 | 1.7 | 5.2 | 38.2 | 42 | 14 | 14 | 2 | 7 | 22 | 0 | 2 | 0 | 0 | 0 | 1 | 1 | 3.16 |
| RP | Worrell, T.Worrell, Tim >> | 36 | 2003 | R | 34 | 37 | 0 | 1 | 0 | 4.85 | .312 | 1.29 | 9.9 | 1.9 | 6.9 | 42.2 | 46 | 24 | 23 | 6 | 9 | 32 | 0 | 5 | 2 | 0 | 0 | 3 | 1 | 4.19 |
| RP | Spurling, C.Spurling, Chris >> | 26 | 2003 | R | 23 | 25 | 0 | 1 | 2 | 4.50 | .364 | 1.71 | 12.2 | 3.2 | 4.8 | 28.0 | 38 | 16 | 14 | 4 | 10 | 15 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4.86 |
| SP | Hampton, M.Hampton, Mike >> | 31 | 2003 | L | 19 | 18 | 1 | 3 | 1 | 4.54 | .310 | 1.29 | 9.5 | 2.3 | 5.9 | 35.2 | 37 | 20 | 18 | 6 | 9 | 23 | 0 | 2 | 1 | 0 | 1 | 2 | 0 | 4.86 |