Celtics Highlights December 15, 2020 10:00 pm Jeff Teague and the rookies show promise in Celtics preseason opener Check out highlights from the Celtics preseason opener in Philadelphia Celtics Videos 2:35 Celtics earn dominant series win over Heat 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