| SP | Mussina, M.Mussina, Mike † >> | 33 | 2001 | R | 96 | 32 | 32 | 18 | 8 | 3.35 | .289 | 1.20 | 8.9 | 1.9 | 6.4 | 212.0 | 210 | 81 | 79 | 25 | 44 | 151 | 1 | 0 | 0 | 0 | 24 | 5 | 3 | 3.80 |
| SP | Halladay, R.Halladay, Roy >> | 24 | 2001 | R | 80 | 32 | 32 | 11 | 9 | 5.12 | .337 | 1.51 | 10.9 | 2.8 | 6.9 | 179.1 | 216 | 108 | 102 | 17 | 55 | 137 | 0 | 0 | 0 | 0 | 14 | 3 | 7 | 3.68 |
| SP | Valdez, I.Valdez, Ismael >> | 28 | 2001 | R | 19 | 16 | 16 | 6 | 5 | 4.56 | .336 | 1.49 | 9.5 | 4.0 | 5.6 | 94.2 | 99 | 51 | 48 | 14 | 42 | 58 | 0 | 0 | 0 | 0 | 9 | 3 | 0 | 5.14 |
| SP | Morris, M.Morris, Matt # >> | 27 | 2001 | R | 53 | 31 | 31 | 12 | 7 | 4.87 | .319 | 1.37 | 10.0 | 2.3 | 6.9 | 190.1 | 212 | 105 | 103 | 18 | 49 | 146 | 0 | 0 | 0 | 0 | 17 | 6 | 7 | 3.56 |
| SP | Clemens, R.Clemens, Roger >> | 39 | 2001 | R | 67 | 29 | 29 | 8 | 14 | 5.03 | .338 | 1.50 | 10.3 | 3.2 | 6.0 | 168.1 | 192 | 103 | 94 | 22 | 60 | 112 | 0 | 0 | 0 | 0 | 13 | 6 | 11 | 4.55 |
| CL | Rodriguez, F.Rodriguez, Felix >> | 29 | 2001 | R | 99 | 46 | 0 | 2 | 8 | 4.03 | .323 | 1.41 | 9.4 | 3.5 | 8.6 | 44.2 | 46 | 21 | 20 | 3 | 17 | 42 | 0 | 26 | 5 | 0 | 0 | 1 | 0 | 3.20 |
| SU | Stanton, M.Stanton, Mike >> | 34 | 2001 | L | 23 | 73 | 0 | 2 | 1 | 3.10 | .266 | 1.07 | 6.4 | 3.3 | 7.6 | 58.0 | 41 | 23 | 20 | 1 | 21 | 49 | 0 | 0 | 3 | 0 | 0 | 1 | 0 | 2.67 |
| RP | Weathers, D.Weathers, Dave >> | 32 | 2001 | R | 77 | 87 | 0 | 2 | 2 | 4.54 | .357 | 1.64 | 9.6 | 5.3 | 7.1 | 77.1 | 82 | 44 | 39 | 9 | 45 | 61 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 4.77 |
| RP | Phelps, T.Phelps, Travis >> | 24 | 2001 | R | 61 | 65 | 0 | 3 | 5 | 4.94 | .398 | 1.96 | 12.0 | 5.6 | 5.6 | 51.0 | 68 | 34 | 28 | 4 | 32 | 32 | 0 | 1 | 2 | 0 | 0 | 1 | 3 | 4.71 |
| RP | Farnsworth, K.Farnsworth, Kyle >> | 25 | 2001 | R | 84 | 54 | 0 | 7 | 2 | 4.80 | .315 | 1.36 | 8.5 | 4.0 | 8.3 | 50.2 | 47 | 29 | 27 | 8 | 22 | 46 | 0 | 1 | 3 | 0 | 0 | 1 | 1 | 4.62 |
| RP | Arrojo, R.Arrojo, Rolando >> | 33 | 2001 | R | 68 | 54 | 0 | 3 | 3 | 4.00 | .351 | 1.62 | 10.1 | 4.4 | 6.1 | 63.0 | 71 | 32 | 28 | 5 | 31 | 43 | 0 | 3 | 0 | 0 | 0 | 0 | 2 | 4.14 |
| RP | Stewart, S.Stewart, Scott # >> | 26 | 2001 | L | 60 | 81 | 0 | 2 | 2 | 5.23 | .314 | 1.37 | 9.2 | 3.4 | 7.8 | 51.2 | 52 | 33 | 30 | 11 | 19 | 44 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 5.20 |