Walker gets hot late, scores 29 as Celtics beat Mavs 116-106

Kemba Walker made a trio of key 3-pointers in the fourth quarter and finished with 29 points, Jaylen Brown added 25 points and 11 rebounds, and Boston beat the Dallas Mavericks 116-106 Monday night in the Celtics' first game since Gordon Hayward had surgery on his broken left hand.