DALLAS (AP) - Kevin Durant scored 23 points, Jeff Green added 22 and the Oklahoma City Thunder clinched a playoff spot with a 121-116 victory over the Dallas Mavericks on Saturday night.

Russell Westbrook and Nick Collison added 17 points each to help the Thunder end a nine-game road losing streak against the Mavericks dating to when the team was based in Seattle.

Oklahoma City missed the playoffs last season after relocating from Seattle. The Thunder are the NBA's most improved team this season, more than doubling their 23 victories in 2008-09.

Dirk Nowitzki had 30 points and 13 rebounds for Dallas, and Jason Kidd added 24 points in the matchup of possible playoff opponents.

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