NBA: Boston Celtics at Chicago Bulls

Boston Celtics forward Jayson Tatum (0) goes to the basket against Chicago Bulls forward Talen Horton-Tucker (22) during the second half at United Center.  

NBA: Boston Celtics at Chicago Bulls

Boston Celtics guard Jaylen Brown (7) goes up for a dunk against the Chicago Bulls forward Jalen Smith (7) during the second half at United Center.  

NBA: Boston Celtics at Chicago Bulls

Boston Celtics guard Jaylen Brown (7) dunks the ball against the Chicago Bulls forward Jalen Smith (7) during the second half at United Center.  

NBA: Boston Celtics at Chicago Bulls

Boston Celtics guard Jaylen Brown (7) dunks the ball against the Chicago Bulls forward Jalen Smith (7) during the second half at United Center.  

NBA: Boston Celtics at Chicago Bulls

Boston Celtics guard Jaylen Brown (7) goes up for a dunk against the Chicago Bulls forward Jalen Smith (7) during the second half at United Center.  

Jayson Tatum had 35 points and 14 rebounds and Payton Pritchard came off the bench to score 29 points as the visiting Boston Celtics beat the Chicago Bulls 138-129 on Friday in the fourth NBA Cup game for each team.

Tatum's free throw handed Boston a 125-115 lead with 4:11 to play. Chicago sliced its deficit to three points on Zach LaVine's 3-pointer with 3:05 left but failed to get any closer after that.