Biffle hadn’t won since he took the first two races in the 2008 Chase for the Cup championship. Biffle won on Sunday with Roush in the Mayo Clinic for injuries sustained in a plane crash in Wisconsin.
It was also the first win of the season for Roush Fenway Racing.
Tony Stewart was second and Roush driver Carl Edwards was third.
The start of the 500-mile race was delayed by rain, then had two lengthy red flag stops that totaled nearly 50 minutes.
Elliott Sadler and Kurt Busch both walked away from scary wrecks that knocked them out of the race.
By Elaine Donnelly
Extending sexual misconduct to combat units
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