Brooklyn snapped a three-game losing streak with a 122-114 come-from-behind victory over Atlanta before a sellout crowd of 17,926 at Barclays Center.

Trailing by eight late in the third quarter, the Nets grabbed the win with an extended 31-12 run that spanned into the fourth.

Cam Johnson had 10 of his 28 points in that final period, tying his career high with seven assists. Keon Johnson scored 22 points, while Tyrese Martin stood in for injured D’Angelo Russell with 16 points.

Trae Young had 28 points, a dozen assists and six rebounds for Atlanta. But the Nets pressured the ball out of his hands quicker in the extended game-changing run.

And after letting the Hawks go 10-for-28 from deep through the first three quarters, they held them to just 1-for-9 in the fourth.

“That played the biggest part because we had other guys for the Hawks making plays instead of Trae Young,” Martin said. “So as the game went on, we had to live with other guys making decisions instead of an All-Star making the decisions.

“So as the game progressed, we had guys like Dyson Daniels, make him make passes, make reads, even Terance Mann. … We knew we’d much rather live with those guys making and taking shots.”

Brooklyn (23-45) now is a half-game ahead of Philadelphia and one ahead of Toronto for fifth in the lottery odds.

The Nets led by as many as a dozen early on, with Cam Johnson finding Maxwell Lewis for a layup and a 45-33 cushion. It still was 50-41 after Keon Johnson’s free throw with 5:18 left in the second quarter.

Brooklyn allowed an 18-4 run to fall behind 59-54 with 55 seconds in the half.

A Hawks challenge saw Cam Johnson’s 3-pointer overturned for an offensive foul. The Nets wing’s temper boiled over, and he had to be held back by staff.

The Nets trailed by six going into the locker room and still were down 86-78 with 3:25 left in the third. But that’s when Cam Johnson settled in and helped spur the extended 31-12 run with huge shots.

“I did a poor job of managing [emotions]. There were some plays, one in particular, that irritated me to a very, very, very high degree,” Johnson said. “I’ve still got to be better at turning the page on that and moving on. Eventually, I did.”

Clinging to a 99-98 edge after Young’s layup, Brooklyn reeled off 10 unanswered points. Keon Johnson’s 3 capped the run for an 11-point cushion with 6:56 to play, and they closed it out.

“Yeah, what was most impressive was [Cam Johnson] battling frustration,” Nets coach Jordi Fernández said. “At one point, he was a little too frustrated, and he got himself back into the game, made those 3s, forgot about all the complaining, and that was the best thing to me. … Just an amazing performance.”

Fernández said Russell being held out was precautionary to manage his sore right ankle.