Westbrook rolled his ankle with 10 minutes left in the fourth quarter of the Wizards' 120-95 Game 2 loss in Philadelphia on Wednesday night and did not return. He tweaked the same ankle earlier in the game as he battled the 76ers' Ben Simmons on defense.
Wizards coach Scott Brooks said Westbrook would test the ankle Saturday morning.
Westbrook has struggled as the Wizards trail 2-0 in the series. He has made just 9 of 27 shots vs. the Sixers and is averaging just 5.5 rebounds -- half his regular-season average. He is averaging 13 points and 12.5 assists.