Schedule and 2025-26 Results
Regular Season Records: Boston 56-26, Philadelphia 45-37
Game 1 on Sunday, 19 April: Philadelphia loses at Boston, 123-pts-91
Game 2 on Tuesday, 21 April: Philadelphia wins at Boston, 111-pts-97
Game 3 on Friday, 24 April: Boston wins at Philadelphia, 108-pts-100
Game 4 on Sunday, 26 April: Boston wins at Philadelphia, 128-pts-96
Game 5 on Tuesday, 28 April: Philadelphia wins at Boston, 113-pts-97
Game 6 on Thursday, 30 April: Boston loses at Philadelphia, 106-pts-93
Game 7 on Saturday, 02 May: Philadelphia wins at Boston, 109-pts-100

SERIES NOTES:

After Game 7: The Philadelphia 76ers visited and topped the Boston Celtics 109-pts-100 to complete a 4-games-3 best-of-7 MLB/NBA/NHL playoff series 1633 victory. With the series 1633 win, the Philadelphia 76ers improve their best-of-7 NBA playoff series record to 25-32 overall and 8-6 in the Preliminary round. With the series 1633 loss, the Boston Celtics see their best-of-7 NBA playoff series record fall to 79-34 overall and 14-7 in the Preliminary round. The win order for the victorious Philadelphia 76ers in series 1633 was LWLLWWW: Series 1633 thus becomes the second NBA Preliminary-round series, the eighth NBA series (all rounds), and the 27th MLB/NBA/NHL series (all rounds) to follow that win order to completion. The series 1633 Game 7 victory by the Philadelphia 76ers is their second best-of-7 NBA playoff Game 7 victory on the road; both this victory and their first best-of-7 NBA playoff Game 7 victory on the road occurred at the expense of the Boston Celtics (the first, in series 408 in the 1982 NBA Semifinals).

After Game 6: The Philadelphia 76ers hosted and topped the Boston Celtics 106-pts-93 to tie best-of-7 MLB/NBA/NHL playoff series 1633 at 3-games-all. When tied 3-games-all in a best-of-7 MLB/NBA/NHL playoff series, the Boston Celtics have a Game 7 record of 27-10, while the Philadelphia 76ers have a Game 7 record of 5-10 (with an active four-Game 7 losing streak). In Boston, the Celtics have a 22-6 Game 7 record; on the road, the Philadelphia 76ers have a 1-8 Game 7 record (with an active four-Game 7 road losing streak) in best-of-7 NBA playoff series. The sole best-of-7 NBA playoff road Game 7 victory by the Philadelphia 76ers occurred in series 408, in the 1982 NBA Semifinals, against the Boston Celtics.

After Game 5: The Philadelphia 76ers visited and defeated the Boston Celtics 113-pts-97 to drop the Boston Celtics best-of-7 MLB/NBA/NHL series 1633 lead to 3-games-2. When leading a best-of-7 MLB/NBA/NHL playoff series 3-games-2, the Boston Celtics have a series record of 42-4 and a Game 6 record of 22-24. When trailing a best-of-7 MLB/NBA/NHL playoff series 3-games-2, the Philadelphia 76ers have a series record of 0-17 and a Game 6 record of 7-10. The Philadelphia 76ers trailed the host Boston Celtics by seven points after two quarters of series 1633 Game 5, but emerged victorious: In the history of best-of-7 NBA playoff games from 1947 through 27 April 2026, inclusive, road teams down seven points after two quarters had a game record of only 29-109 (.210) - the Philadelphia 76ers thus achieve a grade-C (.200 - .299) in-game comeback.

After Game 4: The Boston Celtics visited and bested the Philadelphia 76ers 128-pts-96 to take a best-of-7 MLB/NBA/NHL playoff series 1633 lead of 3-games-1. When leading a best-of-7 MLB/NBA/NHL playoff series 3-games-1, the Boston Celtics have a series record of 32-0 and a Game 5 record of 21-11. When trailing a best-of-7 MLB/NBA/NHL playoff series 3-games-1, the Philadelphia 76ers have a series record of 0-16 and a Game 5 record of 6-10. Leading the Philadelphia 76ers 3-games-1 in a best-of-7 NBA playoff series, the Boston Celtics have a 4-0 series record and a 4-0 Game 5 record against the 76ers. The series 1633 Game 4 victory margin of 32 points is the fourth-largest victory margin by a road team in a best-of-7 NBA playoff series to increase a 2-games-1 series lead to 3-games-1; in the previous three cases, the road team achieving the lopsided Game 4 victory then won Game 5 and the series.

After Game 3: The Boston Celtics visited and outscored the Philadelphia 76ers 108-pts-100 to take a best-of-7 MLB/NBA/NHL playoff series 1633 lead of 2-games-1. When leading a best-of-7 MLB/NBA/NHL playoff series 2-games-1, the Boston Celtics have a series record of 48-5 (with an active five-series winning streak) and a Game 4 record of 22-31. When trailing a best-of-7 MLB/NBA/NHL playoff series 2-games-1, the Philadelphia 76ers have a series record of 2-17 (with an active seven-series losing streak) and a Game 4 record of 8-11. Trailing a best-of-7 NBA playoff series 2-games-1 (as they now do in series 1633), the Philadelphia 76ers notched their only two series comeback victories in 2001, in series 838 in the 2001 NBA Quarterfinals round over the Toronto Raptors, and in series 842 in the 2001 NBA Semifinals round over the Milwaukee Bucks. The Philadelphia 76ers have a 0-4 series record against the Celtics when trailing Boston 2-games-1 in a best-of-7 NBA playoff series.

After Game 2: The Philadelphia 76ers visited and defeated the Boston Celtics 111-pts-97 to tie best-of-7 MLB/NBA/NHL playoff series 1633 at 1-game-all. When tied 1-game-all in a best-of-7 MLB/NBA/NHL playoff series, the Boston Celtics have a series record of 32-15 and a Game 3 record of 26-21, while the Philadelphia 76ers have a series record of 10-16 and a Game 3 record of 15-11. In the history of best-of-7 NBA playoff series (1947-2025, inclusive), teams such as the Boston Celtics in series 1633 which win Game 1 at home by double digits and then lose Game 2 at home by double digits have a series record of 14-6.

After Game 1: The Boston Celtics hosted and defeated the Philadelphia 76ers 123-pts-91 to take a best-of-7 MLB/NBA/NHL playoff series 1633 lead of 1-game-nil. When leading a best-of-7 MLB/NBA/NHL playoff series 1-game-nil, the Boston Celtics have a series record of 65-8 (with an active six-series winning streak) and a Game 2 record of 46-27. When trailing a best-of-7 MLB/NBA/NHL playoff series 1-game-nil, the Philadelphia 76ers have a series record of 5-24 (with an active five-series losing streak) and a Game 2 record of 14-15. In the history of best-of-7 NBA playoff series (1947-2025, inclusive), teams such as the Boston Celtics in series 1633 which win Game 1 by 32 points have a 5-1 series record and a 5-1 Game 2 record.

Pre-series assessment: In the 2025-26 NBA regular season, the Boston Celtics finished eleven games ahead of the Philadelphia 76ers. From 1947 through the 2025 NBA Finals round, when NBA teams led their best-of-7 playoff series opponents by eleven regular-season games, they have posted a best-of-7 playoff series record of 28-5 (.848) with an active ten-series winning streak in those series against those opponents. Best-of-7 MLB/NBA/NHL playoff series 1633 is the 113rd best-of-7 NBA playoff series for the Boston Celtics, and the 57th for the Philadelphia 76ers. In best-of-7 NBA playoff series, the Boston Celtics have an all-rounds series record of 79-33, a Preliminary-round series record of 14-6, and a Game 1 record of 73-39, while the Philadelphia 76ers have an all-rounds series record of 24-32, a Preliminary-round series record of 7-6, and a Game 1 record of 27-29. Series 1633 is the fifteenth best-of-7 NBA playoff series meeting between the Boston Celtics and the Philadelphia 76ers. In their previous fourteen best-of-7 NBA playoff series against each other, the Boston Celtics hold a 10-4 lead over the Philadelphia 76ers, with an active five-series winning streak against the 76ers.