NBA: Cavaliers beat Celtics 121-99 on Paul Pierce’s day

Cleveland's LeBron James (23) drives past Boston's Marcus Morris (13) during the third quarter of Sunday's game. The Cavaliers won 121-99. (AP Photo/Michael Dwyer)

BOSTON — LeBron James quieted a Celtics crowd that came to celebrate Paul Pierce on Sunday, scoring 24 points with 10 assists and eight rebounds to give new-look Cleveland a 121-99 victory over Boston in an individual performance reminiscent of the rivalry’s heyday.