Thunder coach Mark Diennell gave Gilgus Alcander, the most valuable player for this season, a late break from the third quarter instead of his usual comfort early in fourth.
Pacers 101-97 led with a survival of less than four minutes, but Gilgeous-alexander scored 15 points out of 16 points from Thunder and ended the match with a free score of 10 attempts.
Gallin Williams scored 27 points and achieved seven counterattacks for thunder, while Alex Caroso added 20 points of the bench.
Pascal Siakam Paces led with 20 points and Tysse Haliburt 18.
“We have not been implemented at the end of the game,” said Siamie. “We did not get easy shots. The easy shots we got, we missed them. They made them.”
Thunder Host Five at the Paycom Center in Oklahoma City at 19:30 local time on Monday (01:30 GMT, Tuesday).