Thunder coach Mark Daigneaul gave Gilgeous-Alexander, this season’s Most Valuable Player, a break late in the third quarter rather than his usual rest early in the fourth.
The Pacers led 101-97 with less than four minutes remaining, but Gilgeous-Alexander scored 15 of the Thunder’s final 16 points and ended the game with 10 free-throws from 10 attempts.
Jalen Williams scored 27 points and made seven rebounds for the Thunder, while Alex Caruso added 20 points off the bench.
Pascal Siakam led the Pacers with 20 points and Tyrese Haliburton 18.
“We just didn’t execute at the end of the game,” said Siakam. “We didn’t get easy shots. The easy shots that we got, we missed them. And they made them.”
The Thunder host game five at Paycom Center in Oklahoma City at 19:30 local time on Monday (01:30 BST, Tuesday).
