J.R. Smith has been suspended for Game 4 of the New York Knicks' series with the Boston Celtics for elbowing Celtics guard Jason Terry in the chin. Game 4 is set for Sunday afternoon at 1 p.m. The Knicks lead the series, three games to none. Terry was guarding Smith, the NBA's Sixth Man of the Year this season, with about 7 minutes left in the game when Smith swung his elbows widely, catching Terry in the face. Terry popped up and had to be restrained by teammates, coach Doc Rivers and referee Dan Crawford. The officials immediately called a foul, and after video review ruled it a Flagrant 2, meaning an automatic ejection.