Boston: LeBron James quieted a Celtics crowd that came to celebrate Paul Pierce on Sunday, finishing with 24 points, 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.

And this time, Pierce was sitting courtside in street clothes, unable to do anything about it.

James shook off a first-quarter leg injury to score 13 in the second quarter — eight of them during a 13-2 run that turned a one-point deficit into a double-digit lead. The Celtics made it 64-55 on the first basket of the third quarter but never got within 10 again.

As the Cavaliers opened a 27-point lead midway through the fourth, the crowd began chanting “We want Paul Pierce!” But he remained in his baseline seat, awaiting the postgame ceremony that would raise his No. 34 to the TD Garden rafters.