| SP | Hanson, T.Hanson, Tommy # >> | 22 | 2009 | R | 92 | 10 | 10 | 1 | 5 | 6.44 | .351 | 1.62 | 9.9 | 4.8 | 7.3 | 58.2 | 64 | 47 | 42 | 9 | 31 | 47 | 0 | 0 | 0 | 0 | 5 | 0 | 3 | 5.00 |
| SP | Verlander, J.Verlander, Justin >> | 26 | 2009 | R | 88 | 10 | 10 | 4 | 4 | 5.20 | .330 | 1.44 | 9.9 | 3.2 | 8.6 | 62.1 | 68 | 36 | 36 | 12 | 22 | 59 | 0 | 0 | 0 | 0 | 4 | 2 | 1 | 4.77 |
| SP | Scherzer, M.Scherzer, Max >> | 25 | 2009 | R | 50 | 9 | 9 | 2 | 5 | 5.47 | .338 | 1.45 | 9.4 | 3.7 | 8.6 | 51.0 | 53 | 31 | 31 | 8 | 21 | 49 | 0 | 0 | 0 | 0 | 3 | 4 | 1 | 4.59 |
| RP | Hoffman, T.Hoffman, Trevor >> | 42 | 2009 | R | 95 | 26 | 0 | 2 | 0 | 2.33 | .275 | 1.14 | 8.1 | 2.4 | 6.9 | 38.2 | 34 | 10 | 10 | 3 | 10 | 29 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 3.29 |
| RP | Guzman, A.Guzman, Angel >> | 28 | 2009 | R | 87 | 26 | 0 | 0 | 1 | 4.02 | .361 | 1.66 | 7.5 | 7.5 | 6.1 | 31.1 | 26 | 15 | 14 | 2 | 26 | 21 | 0 | 5 | 2 | 0 | 0 | 1 | 2 | 5.10 |
| RP | Valverde, J.Valverde, Jose >> | 30 | 2009 | R | 79 | 22 | 0 | 2 | 2 | 4.32 | .348 | 1.60 | 11.2 | 3.2 | 10.4 | 25.0 | 31 | 13 | 12 | 6 | 9 | 29 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 4.88 |
| RP | Choate, R.Choate, Randy >> | 34 | 2009 | L | 73 | 23 | 0 | 1 | 1 | 4.76 | .358 | 1.68 | 10.6 | 4.9 | 8.6 | 22.2 | 26 | 12 | 12 | 1 | 12 | 21 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 3.32 |
| RP | Bulger, J.Bulger, Jason >> | 31 | 2009 | R | 70 | 13 | 0 | 1 | 1 | 3.18 | .261 | 1.06 | 6.4 | 3.2 | 12.2 | 17.0 | 12 | 6 | 6 | 1 | 6 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.12 |
| SP | Shields, J.Shields, James >> | 28 | 2009 | R | 34 | 5 | 0 | 0 | 1 | 16.20 | .531 | 3.40 | 23.4 | 7.2 | 9.0 | 5.0 | 13 | 9 | 9 | 1 | 4 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6.00 |