Ben Simmons' new free-throw form after off-season training.
Marcus Morris starts the game with 14 points on 5-5 shooting, 4-4 from three.
Shai gets to his spot and knocks down the midrange jumper for the first 50 point game of his career
After turning the ball over on the previous possession LeBron misses the game tying 3 and the Mavs hold on to win