Watch: Stone banged up after Murphy's hit from behind

Canada's Mark Stone briefly exited Saturday's semifinal clash versus the United States at the World Championship after being bodied into the boards from behind by defender Connor Murphy.

Stone dropped to his knees, clutching at his shoulder, when he emerged from the ensuing scrum. He headed straight to the room, but has since returned for the third period.

The Ottawa Senators forward had four goals and 10 points through eight games entering Saturday.