Marcus Morris scored 19 of his 21 points in the second half, including the go-ahead 3-pointer with 27 seconds remaining, helping the visitors rally from a 16-point halftime deficit to a crucial 101-95 win over the Thunder in Oklahoma City.
Jayson Tatum had a team-high 24 points in the win for a Celtics offense that was running on empty yet again in the first half with 34 points before the break and 0-of-11 shooting from 3-point range. The starters came out with much more purpose in the second half though, fueling a 40-point third quarter that enabled the C's to claw back into the game, thanks to red-hot 3-point shooting from Al Horford (19 points, 3-of-5 from 3) and Morris (4-of-5 from deep).
The Thunder pushed the lead back up to nine midway through the fourth quarter before the C's defense locked down over the final five minutes, closing out the win with a 16-1 run capped by a huge shot from Morris off a Stevens ATO. Russell Westbrook (5-of-20 FG, 13 points) couldn't buy a bucket down the stretch enabling the C's to escape Oklahoma City with the big road win.