Marcus Smart 'was born with his hands dirty.' And he'll do anything to help the Celtics win.

Boston • Marcus Smart doesn't care about the effect the hardwood can have on human flesh. He plays with the abandon of a hair-on-fire stuntman for his Boston Celtics, diving then crashing to the floor while pursuing a loose ball.His bandaged right wrist should serve as a reminder of recent surgery, but that does not seem to cross Smart's mind when he belly-flops onto the leather shoes of the Cleveland Cavaliers coaches.On Tuesday night as the Celtics took control of the Eastern Conference f