Harris was trying to contest a shot by Jayson Tatum at the 2:40 mark of the third quarter and inadvertently had his legs taken out from under him by Tatum. Harris fell on the left side of his face. He laid on the court for several minutes as medical staff attended to him.
He was eventually able to walk off the court on his own power with a towel over his face, but blood was visible both on the towel and on the court. Coach Brett Brown told ESPN after the quarter ended that Harris told him he was OK shortly before he left the court.
Harris led the 76ers with 16 points on 5-of-9 shooting at the time of the injury.
Philadelphia trailed Boston 89-77 entering the final quarter.