Boston Celtics to play Philadelphia 76ers in opening round of NBA playoffs. Here's the schedule.

The Boston Celtics will play the Philadelphia 76ers in the opening round of the Eastern Conference playoffs. The Celtics opponent was finalized when the 76ers beat the Orlando Magic in the play-in game Wednesday night 109-97. 

The No. 2 seed Celtics will open the best-of-seven series against the No. 7 seed 76ers Sunday afternoon at TD Garden in Boston.

Celtics NBA playoff schedule

Game 1: 76ers at Celtics, Sunday, April 19, 1 p.m. at TD Garden
Game 2: 76ers at Celtics, Tuesday, April 21, 7 p.m. at TD Garden
Game 3: Celtics at 76ers, Friday, April 24, 7 p.m. at Xfinity Mobile Arena
Game 4: Celtics at 76ers, Sunday, April 26, 7 p.m. at Xfinity Mobile Arena
Game 5: 76ers at Celtics, Tuesday, April 28, TBD at TD Garden*
Game 6: Celtics at 76ers, Thursday, April 30, TBD at Xfinity Mobile Arena*
Game 7: 76ers at Celtics, Saturday, May 2, TBD at TD Garden*

*If necessary  

Celtics vs. 76ers

Boston and Philadelphia split four games this year, with three of the games decided by one basket.

The 76ers won the season-opener by one point, then topped Boston in November by two points. On Halloween, the Celtics earned a 109-108 win of their own, then comfortably won the final matchup on March 1 by a 114-98 margin.