Schedule and 2017-18 Results
Regular Season Records: Boston 55-27, Philadelphia 52-30
Game 1 on Monday, 30 April: Philadelphia loses at Boston, 117-pts-101
Game 2 on Thursday, 03 May: Philadelphia loses at Boston, 108-pts-103
Game 3 on Saturday, 05 May: Boston wins at Philadelphia, 101-pts-98 (OT)
Game 4 on Monday, 07 May: Boston loses at Philadelphia, 103-pts-92
Game 5 on Wednesday, 09 May: Philadelphia loses at Boston, 114-pts-112

SERIES NOTES:

After Game 5: The Boston Celtics hosted and bested the Philadelphia 76ers 114-pts-112 to complete a 4-games-1 best-of-7 MLB/NBA/NHL playoff series 1377 victory. With the series 1377 win, the Boston Celtics improve their best-of-7 NBA playoff series record to 66-26 overall and 21-7 in the Quarterfinals round. With the series 1377 loss, the Philadelphia 76ers see their best-of-7 NBA playoff series record fall to 20-26 overall and 9-12 in the Quarterfinals round. The win order for the victorious Boston Celtics in series 1377 was WWWLW: Series 1377 thus becomes the 17th NBA Quarterfinals-round series, the 38th NBA series (all rounds), and the 93rd MLB/NBA/NHL series (all rounds) to follow that win order to completion.

After Game 4: The Philadelphia 76ers hosted and defeated the Boston Celtics 103-pts-92 to drop the Boston Celtics best-of-7 MLB/NBA/NHL series 1377 lead to 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 26-0 and a Game 5 record of 16-10. When trailing a best-of-7 MLB/NBA/NHL playoff series 3-games-1, the Philadelphia 76ers have a series record of 0-14 and a Game 5 record of 5-9.

After Game 3: The Boston Celtics visited and bested the Philadelphia 76ers 101-pts-98 in overtime to take a best-of-7 MLB/NBA/NHL playoff series 1377 lead of 3-games-nil. When leading a best-of-7 MLB/NBA/NHL playoff series 3-games-nil, the Boston Celtics have a series record of 13-0 and a Game 4 record of 5-8. When trailing a best-of-7 MLB/NBA/NHL playoff series 3-games-nil, the Philadelphia 76ers have a series record of 0-5 and a Game 4 record of 4-1.

After Game 2: The Boston Celtics hosted and defeated the Philadelphia 76ers 108-pts-103 to take a best-of-7 MLB/NBA/NHL playoff series 1377 lead of 2-games-nil. When leading a best-of-7 MLB/NBA/NHL playoff series 2-games-nil, the Boston Celtics have a series record of 36-0 and a Game 3 record of 13-23. When trailing a best-of-7 MLB/NBA/NHL playoff series 2-games-nil, the Philadelphia 76ers have a series record of 0-11 and a Game 3 record of 6-5. The Boston Celtics trailed the visiting Philadelphia 76ers by nine points after one quarter of series 1377 Game 2, but won. In the history of best-of-7 NBA playoff games since 1947, inclusive, home teams trailing by nine points after one quarter had a game record of 20-31 (.392).

After Game 1: The Boston Celtics hosted and bested the Philadelphia 76ers 117-pts-101 to take a best-of-7 MLB/NBA/NHL playoff series 1377 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 54-5 and a Game 2 record of 36-23. When trailing a best-of-7 MLB/NBA/NHL playoff series 1-game-nil, the Philadelphia 76ers have a series record of 4-18 and a Game 2 record of 11-11.

Pre-series assessment: In the 2017-18 NBA regular season, the Boston Celtics finished three games ahead of the Philadelphia 76ers. From 1947 through the 2018 NBA Preliminary round, when NBA teams led their best-of-7 playoff series opponents by three regular-season games, they have posted a best-of-7 playoff series record of 18-17 (.514) in those series against those opponents. MLB/NBA/NHL best-of-7 playoff series 1377 is the 92nd best-of-7 NBA playoff series for the Boston Celtics, and the 46th for the Philadelphia 76ers. In best-of-7 NBA playoff series, the Boston Celtics have an all-rounds series record of 65-26, a Quarterfinals-round series record of 20-7, and a Game 1 record of 59-32, while the Philadelphia 76ers have an all-rounds series record of 20-25, a Quarterfinals-round series record of 9-11, and a Game 1 record of 23-22. Series 1377 is the 12th best-of-7 NBA playoff series meeting between the Boston Celtics and the Philadelphia 76ers. Boston won seven of the previous eleven best-of-7 NBA playoff series between these two teams. Their last such meeting was in series 1179, in the 2012 NBA Quarterfinals (won by Boston).