The Boston Celtics got 21 points from rookie Jayson Tatum, including big free throws down the stretch and beat the Philadelphia 76ers 108-103 Thursday night.

That means the C's have a 2-0 lead in the best-of-7 series.

What a comeback for the Celtics. They were down 22 points in the first half to win this one.

Terry Rozier scored 20. Marcus Smart added 19. And, the return of Jaylen Brown to play 25 minutes was part of the win too.

Meanwhile, 76ers point guard Ben Simmons was held in check - just one point and seven assists in 31 minutes.

Joe Embiid had 20 points and 14 rebounds. JJ Redick added 23.

The series shifts to Philly for game three Saturday night.