The 2009 AAA 400, will be the twenty-eighth race of the 2009 NASCAR Sprint Cup season and the second race in the ten-race Chase for the Sprint Cup. The 400 miles (640 km) race will be held on Sunday, September 27 at the 1 mile (1.6 km) Dover International Speedway in Dover, Delaware, the city that serves as state capital of the First State. ABC telecasts the race beginning at 1 PM US EDT and MRN along with Sirius Satellite Radio provided radio coverage starting at 1:15 PM US EDT. Jimmie Johnson won the pole and won the race. The race featured Joey Logano rolling over several times in turn 3 and thus brought out a red flag, less than 30 seconds after the caution was waved, Logano walked away from the wreck.

Results: Mark Martin (2) Jimmie Johnson (1) Juan Pablo Montoya (3) Kurt Busch (5) Tony Stewart (9) Denny Hamlin (22) Ryan Newman (10) Jeff Gordon (6) Greg Biffle (13) Brian Vickers (18) Carl Edwards (11) Kasey Kahne (8)

Point Standings: Mark Martin 5,400 ₧ Jimmie Johnson -10 Juan Pablo Montoya. -65 Kurt Busch -75 Tony Stewart -106 Denny Hamlin -108 Ryan Newman -110 Jeff Gordon -122 Greg Biffle -138 Brian Vickers -151 Carl Edwards -153 Kasey Kahne -189