BOSTON -- Boston Celtics guard Marcus Smart said he lacerated his right hand after punching a glass picture frame out of frustration over his play, and despite trade whispers surrounding his name, he said he expects to be back on the court with Boston after the All-Star break. Speaking to reporters for the first time since injuring the hand last month in Los Angeles, Smart said it was anger over missing a last-second shot against the Lakers during Boston's season-worst four-game losing streak that led him to punch the picture frame at the team's Beverly Hills hotel. Smart required 20 stitches, but doctors told him he was lucky to avoid more serious damage. Smart is hoping to return to action later this month after the skin heals on the back of his right hand. "Frustration with myself and everything that was going on -- it got the best of me," said Smart. "When you get frustrated and get kind of angry, you don't really think straight and this happens. Stuff like...