The Celtics beat the Cavaliers in game five for a 3-2 series lead; Lakers win, also lead 3-2; Stars stay alive, beat Red Wings in game four; World number one tennis player Justine Henin retires; Big Brown named favorite for Preakness. (May 15) Author: AssociatedPress Keywords: sportsbrief sports thursday: celtics win Added: May 14, 2008
