Ongoing tensions between countries Canada and the United States have prompted back and forth controversy, and it's lead to the hockey world's anthems being booed.
Prior to the 4 Nations tournament starting, roughly four NHL games were filled with Canadian fans booing the US National Anthem, and in response, American fans booed the Canadian National Anthem.
Many feared that these ongoing tensions would lead into the 4 Nations Face-Off Tournament, and they sure have, take a look:
Matthew and Brady, brothers, finally got to play alongside each other and combined for a dominating performance with 4 points in their 6-1 victory.
Matthew Tkachuk bites back at Canadian fans booing US National Anthem
Tkachuk, the hard-nosed gritty forward for the Florida Panthers certainly shows pride in being US-Born, while being in attendance for most Team USA games even when he's not playing, he was last spotted at the World Juniors.