| SP | Carpenter, C.Carpenter, Chris † >> | 34 | 2009 | R | 96 | 28 | 28 | 13 | 8 | 3.15 | .281 | 1.17 | 8.3 | 2.3 | 6.3 | 208.2 | 192 | 76 | 73 | 23 | 52 | 146 | 7 | 0 | 0 | 4 | 19 | 1 | 2 | 3.80 |
| SP | Danks, J.Danks, John # >> | 24 | 2009 | L | 64 | 27 | 27 | 10 | 10 | 5.66 | .344 | 1.55 | 10.0 | 4.0 | 6.3 | 167.0 | 185 | 109 | 105 | 21 | 74 | 116 | 0 | 0 | 0 | 0 | 11 | 4 | 1 | 4.65 |
| SP | Arroyo, B.Arroyo, Bronson >> | 32 | 2009 | R | 60 | 26 | 26 | 4 | 16 | 6.50 | .366 | 1.68 | 12.0 | 3.2 | 6.7 | 160.2 | 213 | 133 | 116 | 35 | 57 | 119 | 1 | 0 | 0 | 0 | 9 | 8 | 6 | 5.58 |
| RP | Bailey, A.Bailey, Andrew † >> | 25 | 2009 | R | 99 | 68 | 0 | 4 | 4 | 1.98 | .259 | 1.01 | 5.0 | 4.1 | 8.3 | 100.0 | 56 | 23 | 22 | 4 | 45 | 92 | 0 | 13 | 2 | 0 | 0 | 4 | 3 | 3.15 |
| RP | Thornton, M.Thornton, Matt >> | 33 | 2009 | L | 82 | 60 | 0 | 5 | 2 | 3.90 | .284 | 1.19 | 7.7 | 3.1 | 9.6 | 64.2 | 55 | 29 | 28 | 12 | 22 | 68 | 0 | 7 | 4 | 0 | 0 | 0 | 5 | 4.34 |
| RP | Valverde, J.Valverde, Jose >> | 30 | 2009 | R | 79 | 37 | 0 | 3 | 0 | 2.66 | .295 | 1.25 | 7.0 | 4.5 | 9.2 | 40.2 | 31 | 12 | 12 | 7 | 20 | 41 | 0 | 8 | 0 | 0 | 0 | 0 | 1 | 4.73 |
| RP | Francisco, F.Francisco, Frank >> | 30 | 2009 | R | 72 | 22 | 0 | 1 | 1 | 3.14 | .295 | 1.22 | 8.7 | 2.6 | 9.3 | 28.2 | 27 | 10 | 10 | 4 | 8 | 29 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3.75 |
| RP | DiFelice, M.DiFelice, Mark >> | 33 | 2009 | R | 32 | 32 | 0 | 0 | 2 | 6.44 | .363 | 1.68 | 8.8 | 6.5 | 7.3 | 36.1 | 35 | 27 | 26 | 8 | 26 | 29 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 6.53 |
| SP | Niemann, J.Niemann, Jeff >> | 26 | 2009 | R | 31 | 8 | 0 | 3 | 1 | 3.38 | .310 | 1.20 | 9.7 | 1.4 | 6.9 | 13.1 | 14 | 5 | 5 | 3 | 2 | 10 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 5.38 |