The 2009 AAA 400 was the twenty-eighth stock car race of the 2009 NASCAR Sprint Cup Series and the second in the ten-race season-ending Chase for the Sprint Cup. It was held on September 27, 2009, at Dover International Speedway, in Dover, Delaware before a crowd of 110,000 people. The 400-lap race was won by Jimmie Johnson of the Hendrick Motorsports team after he started from pole position. His teammate Mark Martin finished second and Roush Fenway Racing driver Matt Kenseth was third.