Dwight Howard might not play for USA Basketball at this summer's world championships. Orlando's All-Star center and the NBA's two-time defending defensive player of the year said on Monday that he hasn't decided if he will play. It was the first time Howard has publicly wavered about playing in this summer's world championships. He had stayed firm on his commitment all season even as LeBron James, Dwyane Wade and other stars expressed doubts about participating because of impending free agency. "I haven't decided what I'm going to do," Howard said after the Magic's end-of-season meeting. "I'm just going to get some rest and think about that later on." http://sports.espn.go.com/oly/olybb/news/story?id=5236157