Winnipeg right wing Patrik Laine took a hard hit from Buffalo Sabres defender Jake McCabe that left the Jets' leading scorer sprawled on the open ice.
Laine, who was also NHL's rookie points leader entering the day, was escorted to the dressing room after taking the hit from McCabe 13 seconds after the Sabres tied the game 3-3 in the third period.
The Sabres overcame a two-goal decifit and won the game 4-3.
Laine was looking down at the puck when McCabe hit him with his left shoulder.