2:00 Now Playing Celtics dominate Heat in Game 3 Relive all the action from Game 3 of the Eastern Conference Finals.

2:43 Now Playing GAME RECAP: Celtics 117, Heat 106 Jayson Tatum and Jaylen Brown combine for 51 points and 21 rebounds in Boston's Game 3 win against Miami.

1:56 Now Playing Nightly Notable | Jayson Tatum: Sept. 19 Jayson Tatum scored 25 points and grabbed 14 rebounds in the Celtics victory over the Heat.

0:38 Now Playing The Fast Break | Sept. 19 Catch up on all the action from Saturday night.

0:56 Now Playing Top 5 | Sept. 19 Check out the top plays from Saturday night.

1:07 Now Playing Tyler Herro with 16 Points in the 2nd Quarter vs. Boston Celtics

0:13 Now Playing A bigtime dunk by Jayson Tatum in the second quarter

0:20 Now Playing Gordon Hayward on the board in the first quarter

3:45 Now Playing Looking ahead to Celtics-Heat Game 3 What do the Heat and Celtics need to do in order to win game 3?

4:26 Now Playing Nikola Jokic: 'When we score, we need to get back' Jamal Murray, Nikola Jokic and Mike Malone discuss the mistakes from game 1 against the Lakers.

3:44 Now Playing LeBron James: 'We trust our gameplan' Frank Vogel, Anthony Davis, LeBron James, Rajon Rondo, and Dwight Howard discuss what went well for the Lakers ...