49ers' George Kittle gets last word as US tops Canada in 4 Nations match after boos during anthem

Canadians came hard after the U.S. national anthem before the puck dropped at the Bell Centre in Montreal. The Canadian team then dropped the game to the U.S., 3-1. Kittle and the rest of the Americans playing and watching the game got the last laugh.

"Don't boo the anthem!" Kittle wrote in a post on Instagram along with the final score.

As soon as the puck dropped, American and Canadian players' gloves dropped as well. There were three fights within the first nine seconds of the game.

"We knew it was going to happen," Werenski said. "It happened the last game, it's been happening in the NHL before this, and we knew tonight was going to be the same way. We obviously don't like it."

The U.S. faced boos ahead of their game against Finland and later won 6-1.

"It is what it is," Werenski said. "We kind of had an idea. We used it as motivation the best we could and found a way to get a win. But we had an idea going into it, so it wasn't a surprise. Definitely don't like it, though."

The Associated Press contributed to this report.