Russell Westbrook scored 27 points and Serge Ibaka added 11 points and 12 rebounds for the Thunder, which won the matchup between the top two teams in the Western Conference. Oklahoma City is three games behind with eight games remaining.
Durant scored at least 25 points for the 39th consecutive game, the longest streak since Michael Jordan did it 40 consecutive times during the 1986-87 season. He reached 25 on a free throw with 3:31 remaining.
Patty Mills scored 21 points and Kawhi Leonard and Tim Duncan each added 17 for the Spurs. San Antonio had won its previous four games by an average of 23.5 points.
Spurs reserve Manu Ginobili didn't play. He was not listed on the injury report, and Coach Gregg Popovich did not explain why Ginobili was out.