For Boston, it was the worst of halves, it was the best of halves. It was a half of foolishness, it was a half of wisdom. It was a half of tight play, it was a half of free-flowing offense. It was a half of despair, it was a half of renewed hope.

With its season on the line down 3-1, Boston came out tight in the first half of Game 5, with guys trying to do everything themselves, showing no patience, no ball movement, players gunning from three, and nobody in green was defending well. Boston shot 5-of-20 in the first quarter, and while things settled down Boston was lucky to be only down seven at the half.

Then a different Boston team came out in the second half — a team that was defending with intent, pushing the pace, and watching their best player, Jayson Tatum, attack to the tune of 17 third quarter points. At the end of the third, Brad Stevens told his team, “with all sincerity, that’s the first time I’ve seen Celtics basketball in the past few games” (via the ESPN mic’d up segment of the broadcast).

The Celtics pulled away in the fourth to win 121-108. The Heat still lead the series 3-2, with Game 6 coming on Sunday.

“We did not compete hard enough defensively and we paid the price for that,” Erik Spoelstra said of his Heat team.

“I thought we played with great tenacity defensively, and I think our offense followed suit,” Celtics coach Brad Stevens said of the second-half turnaround.

That defense included much more ball pressure out high on Miami and it worked. The Heat shot 19.4% from three, that’s the third straight game under 30% from three for the Heat, but Tyler Herro wasn’t able to bail them out this time around.

For Boston, Tatum finished with 31 points and 10 rebounds, and his third quarter helped save the Boston season.

JT taking over the 3rd.#Celtics pic.twitter.com/b3vk7b7Wgr — Celtics on NBC Sports Boston (@NBCSCeltics) September 26, 2020

Boston needs that Tatum from the opening tip on Sunday, not after 24 minutes (as we have seen the last couple of games). Boston is a good team but it needs Tatum to play at an All-NBA level to look like a contender.

Jaylen Brown added 28 points for the Celtics, while Daniel Theis proved an important role with 15 points and 13 rebounds plus some critical defensive plays down the stretch.

Miami may have led at the half, but when Boston started playing better out of desperation the Heat had no answers.

“No one was playing the way we’re supposed to play, the way we have to play for us to win,” Butler said.

Miami got 23 points from Goran Dragic and 20 from Duncan Robinson, who was a big part of Miami’s strong first half.

Miami was up 3-1, and they have seen how little that lead has meant in the bubble.

“I don’t think those series have anything to do with this. Our guys are well aware,” Spoelstra said. “We have great respect for Boston. We’re not expecting it to be easy. You have to earn it.”