Oklahoma City Thunder guard Russell Westbrook (0) drives to the basket around Boston Celtics guard Marcus Smart (36) during the first half of an NBA basketball game in Oklahoma City, Sunday, Dec. 11, 2016. (AP Photo/Alonzo Adams)
Oklahoma City Thunder guard Russell Westbrook (0) drives to the basket around Boston Celtics guard Marcus Smart (36) during the first half of an NBA basketball game in Oklahoma City, Sunday, Dec. 11, 2016. (AP Photo/Alonzo Adams) Credit: Alonzo Adams

OKLAHOMA CITY — Russell Westbrook’s triple-double streak ended at seven games, but he scored 23 of his 37 points in the second half to help the Oklahoma City Thunder defeat the Boston Celtics 99-96 on Sunday night.

Westbrook had 12 rebounds, but just six assists. His triple-double run was the longest since Michael Jordan had seven straight in 1989. The NBA record is nine in a row by Philadelphia’s Wilt Chamberlain in March 1968.

Steven Adams scored 16 points on 7-for-8 shooting and Enes Kanter added 14 points for the Thunder, who have won seven of eight. Oklahoma City got away with making just 14 of 27 free throws.

Al Horford scored 19 points, and Jae Crowder and Avery Bradley each added 18 for the Celtics.

The Celtics controlled most of the first half and led 43-39 at halftime. It was Oklahoma City’s lowest-scoring first half of the season.

The Celtics led by 13 in the third quarter, but the Thunder whittled their deficit to four by the end of the period.

Westbrook made a driving layup with 30.6 seconds left to give the Thunder a 96-94 lead. Westbrook then won a jump ball with Bradley to start a fast break, and Jerami Grant finished it with a dunk that put Oklahoma City up 98-94 with 14.4 seconds to play.

Marcus Smart scored in close for Boston to make it 98-96. Westbrook made the first of two free throws with 5.1 seconds left to leave the door open, but Smart’s 3-pointer for the tie bounced away as time expired.