In the second period of Game 2 of the Stanley Cup Final, Jack Eichel was skating across the middle of the ice when he got rocked by Matthew Tkachuk.
It was one of the most vicious -- yet clean -- hits you will see. Eichel's helmet popped off as the Vegas center got on all fours. He bobbled up, winced and skated directly to the Golden Knights dressing room.
A scrum broke out on the ice as panic set in elsewhere. Eichel was less than two years removed from artificial disk replacement (ADR) surgery on his neck, a procedure that had never been performed on an NHL player before.