Crawford left Sunday’s game against the San Jose Sharks with 1:30 left in the first period after the back of his head struck the right post during a goalmouth pileup.
Crawford was pulled from a Dec. 23, 2017, game at New Jersey with a concussion, then missed the remainder of the 2017-18 season and the first five games of 2018-19. He returned on Oct. 18 against Arizona and is 6-14-2 with a 3.28 goals-against average in 23 games.
Chicago has recalled goaltender Collin Delia on an emergency basis from the AHL’s Rockford IceHogs.
With files from Associated Press