Jayson Tatum collected his second triple double of the season with 15 points, 11 rebounds and 10 assists while Jaylen Brown added 20 points, 6 rebounds and 6 assists. The Celtics led for the final 41:05 and collected 33 assists on 43 made baskets.

It was Boston’s second win here in 18 days, but it contained none of the drama of the Feb. 2 victory, when the Celtics rallied from a 26-point third quarter deficit. The rematch was an early knockout.

“Really, I just thought the guys were locked in, attention to detail,” Celtics coach Joe Mazzulla said. “Good film session today. I just think it says a lot about the guys being focused and us just trying to get better.”

The Celtics were 24 for 54 from the 3-point line and led by as many as 29 points after going on a run to begin the third quarter that took the enthusiasm out of Wells Fargo Center.

Paul George, Tyrese Maxey and Joel Embiid were all healthy and in the lineup together for just the 14th time this season. Just 1½ games behind the Chicago Bulls for the final play-in spot, the 76ers are holding out hope their Big Three can galvanize in the last 28 games.

They combined for 48 points on 16-for-33 shooting but many of those points were scored when the 76ers were down 20-plus points. Embiid, the Celtics nemesis for years, labored most of his 27 minutes and scored 15 points on 3-for-9 shooting, wearing a large brace on his left knee and struggling to attack Kristaps Porzingis on offense. Embiid scored 2 points in the second half.

“I’m sure you can figure it out,” Embiid said when asked whether his knee is impacting his play. “The way I was playing a year ago is not the way I’m playing right now. It sucks, but I believe I probably need to, you know, to fix the problem, and then I’ll be back at that level. But it’s hard to have the trust when you’re not yourself. I’m not as dominant as I was a couple months ago, but that doesn’t mean I still can’t have a lot of impact on the game. Just me being out there, I think, helps a lot. You know, just my presence, ability to attract double-teams, getting guys more shots. But my dominant self, I’ll get there, it’s just tough because you know you can do so much more, but it’s just … there’s no excuses, it’s just the way it is. Just got to keep finding ways to figure it out and get better.”

The Celtics hadn’t played since Feb. 12 because of the All-Star break and played with an enthusiasm and vigor from the opening tip.

“The break did us well, everybody got to get away, kind of get a refresh,” Tatum said. “And you could tell guys were just energetic today. So the All-Star Break was at the right time and it was needed.”

Tatum was just 5-for-13 shooting but concentrated more on distributing the ball and hitting the boards. He was a plus-19 in his 34 minutes and capitalized on Philadelphia’s blitzing defense by finding Porzingis, Luke Kornet or even Brown flashing to the hoop.

“Rebounding, finding Luke in the seams, (Pritchard) knocked down some shots early,” Tatum said. “They’re showing the crowd. I see the floor the same way I see it every game, just make the right play, pick them apart.”

Pritchard was 3 for 19 from the 3-point line in his two games before the break. He canned five 3-pointers in just 13 first-half minutes as Philadelphia’s defense constantly left him open when the Celtics made the extra pass.

“I guess I just hit shots this game,” he said. “The last game I just didn’t hit shots and it just works like that sometimes. The rest was nice. Mentally you just reset, lock back in and understand we’ve got 27 games left in the regular season and then the playoffs, how long that takes. So you can mentally get prepared for it and I think we wanted to set the tone right away with this game and just come out and defensively set the intensity.”

Despite the city’s recent Super Bowl win and several fans donning Eagles jerseys, the Philadelphia faithful hasn’t forgotten how to jeer. The Celtics took full control with a 13-4 run to begin the third quarter for an 85-60 lead. During that surge, when it appeared the home team was a step slow and failing to get back on defense, the fans showered the arena with boos.

Philadelphia coach Nick Nurse even dug deep into his bench for energy, inserting little-used Jared Butler and David Roddy and that proved futile.

The Celtics’ crisp ball movement and some questionable defensive decisions by the 76ers allowed for a dominant third quarter. Al Horford’s 3-pointer from the right elbow from a Tatum pass put Boston up 100-71 with 1:36 left in the period. Both coaches then began clearing the benches as the refreshed Celtics continued their ascension.

Gary Washburn is a Globe columnist. He can be reached at [email protected]. Follow him @GwashburnGlobe.