Jaylen Brown leads Celtics’ second-half turnaround as Boston beats Miami Heat

The Celtics found themselves trailing the Heat by five, on the road, at halftime of Game 5 of the Eastern Conference finals Wednesday night.

And yet, the Celtics felt just fine. They couldn’t have played much worse in the first half, committing 10 turnovers and giving up nine offensive rebounds to Miami — which allowed the Heat to take 14 extra shots.

“We weren’t playing our best, in a lot of ways,” Celtics coach Ime Udoka said. “Sometimes, all it takes is one guy getting back to his average game.”

No one was playing worse than Jaylen Brown. He went 2-for-7 from the field and committed four turnovers — all in the first quarter. Then the second half started. And as it played out, Brown wound up being the face of the team’s turnaround.

Brown’s 19-point, 0-turnover second half — coupled with an 18-point second half from Jayson Tatum — allowed Boston to finally break open what was a rock fight in the first half, as the Celtics went on to win 93-80 over the Heat, moving Boston to within one victory of its first trip to the NBA Finals in 12 years.

“Same player,” Brown said from the first half to the second. “Just had to get settled in. That’s it. As the game wears on, some of that energy, some of that intensity starts to wear off, so the game opens up a little bit. The game opened up for me in the second half.

“I didn’t want to get down. I didn’t want to look into the past, think that this game was over. My team needed me to come out and respond.

“First half was s—. Threw it away. [Just] come out, play basketball in the second half.”

It was unclear whether Boston was going to be able to follow through on Brown’s instructions after yet another ugly stretch of basketball in this series for the Celtics in the first half of Game 5. The difference from the other periods when Boston has gone off the …

Jaylen Brown takes charge in huge Game 2 win

The Celtics were on the ropes without one of their top fighters Tuesday. But they still threw a mean counterpunch. Despite missing starting point guard Marcus Smart due to a right quad contusion, the Celtics jumped out to an early double-digit lead against the Milwaukee Bucks in Game 2 of the Eastern Conference semifinals and never looked back, rolling to a 109-86 win at TD Garden to tie the best-of-seven series 1-1. Jaylen Brown delivered the biggest blow with a game-high 30 points, 17 of which came in the first quarter. Jayson Tatum added 29 points while the Celtics hit a franchise-record 20 3-pointers (20 of 43) to bounce back from an ugly 101-89 loss in Game 1. Bucks star Giannis Antetokounmpo led Milwaukee with 28 points, nine rebounds and eight assists but shot just 40.7 percent (11 of 27) with five turnovers. He was the only Milwaukee player to reach 20 points, as the Celtics’ defense limited the Bucks to just three 3-pointers on 18 attempts. The teams will have an extended layoff before Game 3, which is Saturday in Milwaukee. Here are our takeaways from an impressive Boston win at the Garden:

Jaylen Brown came to ball

Brown was the first one in the building Tuesday, arriving about three hours before tip to get some extra shots up after scoring just 12 points on 4-of-13 shooting in Game 1.

That extra work clearly helped: Brown exploded a playoff career-high 17 points in the first quarter, hitting six of his first seven shots and dropping Grayson Allen with a filthy crossover.

Brown had 25 points by halftime and missed just five shots (10 of 15) while committing just two turnovers, looking like a completely different player after his rough Game 1.

The Celtics need Brown to be at least the third-best player on the floor to have success in this series. On Tuesday, he was the best, giving Boston a huge boost in Smart’s absence.

Boston has a three party

After making just 18 of their playoff career-high 50 …