Lack was run into by Detroit’s Andreas Athanasiou at 1:59 of overtime and appeared to injure his left leg on the play, which Athanasiou scored on. Lack was down on the ice for several minutes before a stretcher came to help him off.
Both teams stood around post-game to watch the situation unfold.
Team spokesman Mike Sundheim said Lack was moving his arms and legs after he was taken off the ice.
Lack finished the game with 23 saves.
— With files from The Associated Press