| SP | Oswalt, R.Oswalt, Roy # >> | 24 | 2001 | R | 97 | 22 | 22 | 8 | 3 | 3.24 | .259 | 1.01 | 7.0 | 2.1 | 9.0 | 119.1 | 92 | 43 | 43 | 14 | 28 | 119 | 0 | 0 | 0 | 0 | 8 | 5 | 0 | 3.36 |
| SP | Lidle, C.Lidle, Cory † >> | 29 | 2001 | R | 78 | 20 | 20 | 12 | 4 | 3.58 | .298 | 1.24 | 8.6 | 2.6 | 5.7 | 123.1 | 117 | 50 | 49 | 9 | 36 | 78 | 0 | 0 | 0 | 0 | 13 | 4 | 3 | 3.66 |
| CL | Rivera, M.Rivera, Mariano † >> | 32 | 2001 | R | 93 | 56 | 0 | 5 | 7 | 2.35 | .298 | 1.22 | 8.1 | 3.0 | 9.0 | 57.1 | 51 | 15 | 15 | 1 | 19 | 57 | 0 | 31 | 3 | 0 | 0 | 3 | 1 | 2.39 |
| RP | Zambrano, V.Zambrano, Victor >> | 26 | 2001 | R | 87 | 60 | 0 | 4 | 3 | 3.21 | .279 | 1.13 | 6.5 | 3.7 | 8.5 | 53.1 | 38 | 21 | 19 | 4 | 22 | 50 | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 3.45 |
| RP | Hoffman, T.Hoffman, Trevor >> | 34 | 2001 | R | 81 | 48 | 0 | 2 | 3 | 5.11 | .333 | 1.42 | 8.4 | 4.4 | 8.6 | 49.1 | 46 | 28 | 28 | 5 | 24 | 47 | 0 | 0 | 3 | 0 | 0 | 4 | 3 | 4.12 |
| RP | Rincon, R.Rincon, Ricardo >> | 31 | 2001 | L | 72 | 51 | 0 | 1 | 0 | 1.57 | .211 | 0.80 | 5.5 | 1.8 | 6.8 | 46.0 | 28 | 9 | 8 | 4 | 9 | 35 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 3.20 |
| RP | Bottalico, R.Bottalico, Ricky >> | 32 | 2001 | R | 59 | 35 | 0 | 3 | 3 | 8.51 | .391 | 1.89 | 12.3 | 5.1 | 5.4 | 30.2 | 41 | 29 | 29 | 5 | 17 | 18 | 0 | 3 | 1 | 0 | 0 | 1 | 1 | 5.77 |
| RP | Trombley, M.Trombley, Mike >> | 34 | 2001 | R | 54 | 31 | 0 | 1 | 1 | 1.82 | .222 | 0.86 | 5.5 | 2.3 | 7.8 | 39.2 | 24 | 8 | 8 | 6 | 10 | 34 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4.03 |
| SP | Castillo, F.Castillo, Frank >> | 32 | 2001 | R | 50 | 10 | 0 | 0 | 1 | 3.24 | .281 | 1.14 | 6.5 | 3.8 | 7.9 | 33.1 | 24 | 12 | 12 | 2 | 14 | 29 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 3.39 |