Video Headlines December 28, 2020 6:28 pm Done wasting time: Robert Williams needs to put in the effort for Celtics Robert Williams showed a flash of his potential vs. the Pacers, proving that in order to success, he simply needs to put in the extra effort. Celtics Videos 0:51 Jayson Tatum: ‘Lazy to say teams can out-tough us' 3:20 EXCLUSIVE: Sam Hauser on closing out Heat in Game 5 at home 2:58 Highlights from Mike Gorman's final game as Celtics broadcaster 3:41 HIGHLIGHTS: Celtics breeze past Heat, advance to Conference Semifinals 1:08 EXCLUSIVE: Jaylen Brown reacts to series win over the Heat