NASCAR driver Clint Bowyer has been placed on probation until June 16 for aggressive driving. The penalty stems from a late-race incident between Bowyer and Denny Hamlin in last weekend's Nationwide race at Dover. Bowyer and Hamlin were battling for position during a late restart when Hamlin clipped Bowyer, forcing him to pit. Hamlin called the bump "unintentional," but Bowyer raced out of the pits and slammed into Hamlin. Bowyer's No. 21 car was parked immediately by NASCAR officials and he finished 24th. Hamlin wound up 12th. http://sports.espn.go.com/rpm/nascar/nationwide/news/story?id=5202135
