Memphis coach Dave Joerger said before the game that Udrih was a game-time decision. The veteran guard tested the ankle during pregame warmups.
In the Grizzlies' 100-86 series-opening victory, Udrih came off the bench with 20 points, seven rebounds and seven assists.
He scored eight points in Game 2 before spraining the ankle in the first half. He returned late in the third quarter and finished with 10 points in the Grizzlies' 97-82 victory.