Memphis Grizzlies center Marc Gasol is squeezed between Oklahoma City Thunder defenders Thabo Sefolosha, left, and Serge Ibaka during their Game 4 of an opening-round NBA basketball playoff series Saturday, April 26, 2014, in Memphis.

MEMPHIS - Reserve Reggie Jackson scored a playoff-best 32 points, and the Oklahoma City Thunder beat the Memphis Grizzlies 92-89 in overtime Saturday night, tying up their first-round Western Conference series at two apiece.

Jackson had only scored 15 points combined in this series, but the guard shook off his shooting woes by hitting 11 of 16. He outscored Kevin Durant and Russell Westbrook, who struggled through their worst scoring game of the series. Durant was 5 of 21 for 15 points, while Westbrook was 6 of 24 for 15 points.

The Thunder blew a 14-point lead with Memphis, and the Grizzlies blew a third straight fourth-quarter lead themselves. Jackson tied up Memphis with five straight points in the final minute of regulation.

Game 5 is Tuesday night back in Oklahoma City.