BOSTON -- Joel Embiid is headed to the NBA All-Star game for the first time, and he celebrated with another impressive performance.
Embiid scored 26 points and matched a career best with 16 rebounds, leading the 76ers to an 89-80 win over the Boston Celtics on Thursday night.
Just one week after Boston erased a 22-point deficit on its way to a 114-103 victory over Philadelphia in London, the Sixers led by as many as 21 and turned away one last rally by the Celtics down the stretch.
"We knew that it was going to be the same team. It wasn't going to be any new plays," Embiid said. "We were just physical. Last time they played us when they had that comeback, they were more physical than us. So tonight I think we were more physical than them."
After winning seven in a row, Boston has lost two straight.
"I don't want to take anything away from Philadelphia," Boston coach Brad Stevens said. "They certainly made us look poor. If you're not going to own your own space, then you're going to turn the ball over."
The Celtics had no answer for Embiid, who was 10 for 19 from the floor and 6 of 7 at the foul line. He also had six assists and blocked two shots.
The Sixers forced 19 turnovers and outrebounded the Celtics 41-31 while avoiding a season sweep.
"It's been a trend for us the last two games. For whatever reason, we've been sloppy on offense," Horford said. "Other teams are putting pressure on us and speeding us up a little bit and we're not handling it too well."
Embiid scored 10 in the third quarter and McConnell had nine points in the period, helping the Sixers pull away. Jayson Tatum's 3-pointer with 2:01 remaining trimmed Philadelphia's lead to 86-79, but Boston's rally fizzled from there.
Halfway through the season, much-improved Philadelphia (21-20) is in playoff contention. The Sixers are coming off wins against the top two teams in the Eastern Conference this week in Toronto (30-13) and Boston (34-12).
"We feel like we're right there with them," Embiid said. "I don't know what seed we're going to be, but that's a potential matchup in the playoffs, so you always want to come out and like try to dominate, let them know that it's not going to be easy."
Embiid pulled down 16 rebounds for the third time in his career. He got the news earlier Thursday that he was the first Philadelphia player selected as an All-Star starter since Allen Iverson in the 2010-2011 season. Embiid is the first Sixers All-Star since Jrue Holiday in 2013.
"I'm just very proud of him," coach Brett Brown said.
76ers: McConnell was coming off a career-high 18 points Monday against Toronto. ... JJ Redick, who injured his left leg Monday against Toronto, did not play.
Celtics: Irving made the All-Star game for the fifth time. ... The Celtics honored Jo Jo White, a two-time NBA champion who played 10 seasons for Boston, with a video tribute and a No. 10 draped over his regular seat. White died Tuesday at age 71.
76ers: Host Milwaukee on Saturday night.
Celtics: Host Orlando on Sunday.
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