Two years ago, it was the Detroit Pistons and Indiana Pacers. Saturday, it was the Denver Nuggets and New York Knicks at Madison Square Garden in a brawl with 10 players ejected, including the National Basketball Association's scoring leader, who punched an opposing player in the face. Today, after saying that NBA players "set an example for the entire basketball world...for good or ill,'' Commissioner David Stern suspended Carmelo Anthony of the Nuggets for 15 games. Two players got 10-game suspensions and others received lesser penalties.