Blackhawks forward Marcus Kruger suffered a concussion and received some stitches after a hit by Predators winger Ryan Hartman during the second period Tuesday.
Hartman was controlling the puck with his back to Kruger when he cocked back his left elbow and hit the Chicago veteran in the face. Kruger fell to the ice and left a trail of blood on the United Center ice as he was helped off the ice by an official with 3:29 left in the second frame.
Kruger did not return for the third period.