For the second time this season, it was a Smoke Show in the NASCAR Sprint Cup Series as Tony Stewart won the rain-shortend Auto Club 400 at the Auto Club Speedway of Southern California. It is Stewart's 46th-career win and second at the 2-mile oval in Fontana, California.

Kyle Busch, who led most of the race before Stewart took control shortly before halfway, finished second ahead of Dale Earnhardt Jr., Kevin Harvick, and Carl Edwards. Greg Biffle, Ryan Newman, Martin Truex Jr., Kurt Busch, and Jimmie Johnson - who blew up under the caution flag but coasted to pit road - rounded out the top-10.

Polesitter Denny Hamlin tracked Stewart down under the last green flag run before Stewart pulled away until the rain. Crew chief Darian Grubb, who worked with Stewart in his 2011 championship season, called Hamlin to pit road anticipating the race restarting. It did not, and Hamin wound up with a twelfth-place finish. Johnson likewise pitted but when his engine failed, he was saved by the rain instead of beaten by it.

For the full unofficial results, visit NASCAR.com.