Kenseth's victory completed a weekend sweep of NASCAR events for race car owner Jack Roush. Mark Martin won the Craftsman Truck Series race on Friday night and Greg Biffle won Saturday's Busch Series event.
Sunday's victory was Kenseth's first of the season and the 11th of his Nextel Cup career.
"Jack has done a great job with this organization and given us strong cars," Kenseth said after the race. "It showed again today (Sunday). Greg (Biffle) had the dominant car and I felt bad for him."