A two-tire pit stop by Tony Stewart has the dominant driver of the Kobalt Tools 400 back out front.
Stewart lost the lead after being penalized for pulling an impact wrench out of his pit stall. He had worked his way up to 17th when Jeff Gordon crashed heavily in turn three.
Crew Chief Darian Grubb called for a two tire pit stop, and Stewart took the lead on the restart.
Juan Pablo Montoya runs second, followed by Carl Edwards, Martin Truex Jr., and Marcos Ambrose.
Gordon was running in the top-10 when he crashed. The Phoenix winner will fall at least to 17th in the points after beginning the day fifth, sixteen points behind Kyle Busch, who blew an engine early in the race and fell out as well.