Nuggets forward Aaron Gordon was diagnosed with a strained left hamstring strain on Friday, a source told The Denver Post, confirming a report by ESPN's Shams Charania.
Gordon's status for Game 7 of the team's playoff series Sunday in Oklahoma City is now unknown.
He suffered the injury late in Game 6 of the second-round series on Thursday, reaching for his hamstring after a loose ball while Denver was holding off a Thunder comeback. Gordon didn't finish the game.
Nuggets interim coach David Adelman said afterward that concern was "high" regarding the power forward, who also missed a portion of this season with a calf strain.
"Aaron is one of our guys," Adelman said. "He's the reason why we've won games and won series and have a (championship) banner hanging up in there."