The duo combined for 71 points at the Chesapeake Energy Arena as the Thunder cruised to a 105-92 win.
With the Western Conference finals series level at 2-2, it means the opening four games have been won by the hosts.
Spurs hold home-court advantage and host the Thunder at the AT&T Center in game five on Thursday.
Westbrook hit 40 points, provided 10 assists and pulled down five rebounds in an outstanding performance.
Durant (31 points, five assists and five rebounds) also starred, with the duo the only Thunder players to manage double figures.
Kendrick Perkins (10 rebounds) and Serge Ibaka (nine points and eight rebounds) were also strong contributors.
For San Antonio, Tony Parker and Boris Diaw shot an equal team-high 14 points, while the latter also had 10 rebounds.
Spurs had scored the first eight points of the game but Thunder led 26-20 after the first quarter with Westbrook shooting 11 of those points.
Oklahoma City led 58-43 at half-time and never looked back, in complete control through to the finish to draw level in the series.
For more sports news visit allSports.com.gh
This article has 0 comment, leave your comment.