One of the NBA’s worst teams made the Celtics sweat Tuesday night at the Barclays Center.

Boston committed a season-high 20 turnovers — including eight by Jaylen Brown and another seven from Derrick White and Payton Pritchard — and trailed the Nets early in the fourth quarter.

But Brooklyn’s upset bid fell short, with the Celtics seizing control late to win their third straight, 116-99. The victory pushed the 8-7 Celtics above .500 for the first time this season.

Brown offset his shoddy ball security with a game-high 29 points on 9-of-19 shooting. Pritchard stayed hot from 3-point range (5-for-12) to finish with 22 points, 10 rebounds and five assists. White had 15-5-5, plus two steals and two blocks.

The teams will play a rematch Friday night at TD Garden.

“It’s a long season,” White

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