BOSTON — The Celtics won a real heavyweight matchup on Wednesday night, beating the OKC Thunder by 10, 119-109 on a night both Jayson Tatum and Jaylen Brown flirted with triple-doubles.

Box Score

Game Flow

The Thunder started the game on a 14-5 run, mostly because Sam Hauser started the game 1-5 from three on all great looks. Boston put together a 7-2 answer to keep things close, but the Thunder closed the quarter on a 15-7 run to go up 11. The Celtics shot just 29% and 4-13 from three.

Tatum found his game in the second quarter, fueling an 18-10 start that cut the lead back down to three. The run grew to 29-15 and Boston took their first lead of the game. The Thunder reclaimed it, but only led by four at the half.

They pushed the lead to eight, but Boston was able to tie the game midway through the quarter. Baylor Scheierman played well on both ends and gave Boston a lead. A monster dunk by Jaylen Brown got the crowd going as Boston led 77-75. The lead grew to five heading into the fourth.…