| Sep 26 | | 15 | Padres 5, Diamondbacks 8Final | Tracy's slam leads Diamondbacks over Padres 8-5 |
| Sep 27 | | 15 | Padres 4, Diamondbacks 7Final | Ojeda leads Diamondbacks over Padres, 7-4 |
| Sep 29 | | 15 | Diamondbacks 4, Giants 8Final | Molina homers twice in Giants' win |
| Sep 30 | | 5 | Diamondbacks 1, Giants 4Final | Penny tosses gem, but Giants out of playoff hunt |
| Oct 1 | | 20 | Diamondbacks 3, Giants 7Final | Lincecum wins final 2009 start |
| Oct 2 | | 38 | Diamondbacks 12, Cubs 3Final | Byrnes, Young lead Diamondbacks over Cubs 12-3 |
| Oct 3 | | | Diamondbacks 0, Cubs 5Final | Wells pitches Cubs to victory over Arizona |
| Oct 4 | | 43 | Diamondbacks 5, Cubs 2Final | Arizona beats Cubs in finale of miserable year |
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