Celtics guard Jaylen Brown, right, tries to steal the ball from Thunder forward Aleksej Pokusevski, center, during the second half of Boston’s 119-115 loss on Tuesday in Boston. Charles Krupa/Associated Press

BOSTON —The Oklahoma City Thunder were on the verge of making some unpleasant history. Lu Dort made it his mission not to let that happen.

Dort scored 24 points, Darius Bazley added 21 points and 10 rebounds, and the Thunder snapped a 14-game skid with a 119-115 win over the Boston Celtics on Tuesday night.

Isaiah Roby and Ty Jerome each finished with 15 points for the Thunder, who won their first game since March 31 against Toronto.

A 15th straight loss would have set a franchise record for Oklahoma City.

“I saw it today and I told Shai (Gilgeous-Alexander), ‘Shai, we’re winning today,'” Dort said. “That was my mindset just before the game – to do everything to win. The fact that we did it as a team was great.”

The Thunder’s recent swoon coincides with a foot injury that sidelined leading scorer Gilgeous-Alexander more than a month ago – they have won just two games since.

Oklahoma City committed 27 turnovers against Boston but went 13 of 30 from 3-point range and 28 of 36 from the free-throw line to beat back a late charge.

“It was a character test,” Thunder Coach Mark Daigneault said. “It was an opportunity to show who we are through the adversity. I came away impressed.”

Jaylen Brown scored 39 points for the Celtics, who have lost 4 of 5 as they fight to maintain their position in the tight Eastern Conference playoff race. Payton Pritchard added a career-high 28 points.

The Celtics made the Thunder work in the closing minutes.

Oklahoma City had its 11-point lead erased in the third quarter before taking a 106-95 edge on a layup by Bazley with 2:25 left in the game.

It was 110-100 before the Celtics reeled off seven straight points. Boston applied pressure, but Bazley got in the lane for a dunk.

Boston cut it to 112-109 on a pair of free throws by Pritchard with 30.8 seconds remaining. The Celtics then fouled Theo Maledon, who hit two free throws.

Brown was fouled on a layup attempt and hit both free throws. Oklahoma City then beat Boston’s full-court press and Roby dunked to close it out.

The Celtics played without All-Star forward Jayson Tatum (left ankle impingement), point guard Kemba Walker (strained left oblique) and big man Robert Williams (left knee soreness).

Coach Brad Stevens said he’s hopeful both Tatum and Williams will be able to return Wednesday when Boston hosts Charlotte. Walker will miss that game and maybe more – yet another hiccup for a team Stevens said has little room for error with 10 games left in the regular season.

“We’ve got to play with more of a sense of urgency,” Brown said. “Tonight I feel like we didn’t have the sense of urgency that we needed across the board. A team that has some young, talented players came ready to play. And we got beat.”