from Eric Francis of Sportsnet,

At the tail end of a 5-2 win over the Boston Bruins there lay Johnny Gaudreau in a crumpled heap, behind the visitors’ net in obvious discomfort.

He’d been pasted by Bruins defenceman Charlie McAvoy split seconds after Gaudreau’s breakaway attempt was stopped in spectacular fashion.

It drew an interference penalty, not to mention a crowd, but left Gaudreau wincing as he skated slowly to the bench.

Gaudreau played over a minute in the ensuing power play before a concussion spotter radioed down to Flames athletic therapist Kent Kobelka to let him know Gaudreau was to leave the game to be checked.

He failed to return to the final 10 minutes.

continued

Watch the hit below.