The situation was perfect for Carl Edwards to issue some payback on Kyle Busch. Instead, Edwards passed on a chance to knock Busch out of the lead over the closing laps at Bristol Motor Speedway. As Busch pulled away for Sunday's win -- his fifth straight dating back to last August at the Tennessee track -- Edwards regretted not racing harder to potentially steal the victory. The two have a history at Bristol, and Edwards is still smarting from contact last month at Phoenix that he believed wrecked a car capable of winning the race. "I told him after Phoenix that I still owe him one, but I'll save it up," Edwards said. "I thought I'd be able to race with him harder for those last 15 to 20 laps, but he took off and I just couldn't get back to him to race. If I would have known that was the only shot I was going to have, I might have raced a little harder." That Edwards considered revenge was a surprise to Busch, who seemed mystified that Edwards could be holding any sort of grudge against him. Read more: http://sports.espn.go.com/rpm/nascar/cup/news/story?id=6240509