Singer Chantal Kreviazuk changed the lyrics of the Canadian national anthem during the 4 Nations Face-Off championship game between the US and Canada on Thursday, adding further fuel to a contest already layered with political tension.

Before the puck drop at the inaugural 4 Nations Face-Off championship game in Boston, multiple fights had already broken out between Team USA and Team Canada fans in the lead up over the weekend. On Thursday, the night of the final, tensions were high as singer Chantal Kreviazuk took to the ice to sing Canada’s national anthem, “O Canada.”

Chantal Kreviazuk, who performed the Canadian anthem prior to the 4 Nations Face-Off title game Thursday changed a lyric as a rebuke to President Trump's repeated remarks about making the country the 51st state.

Canadian fans booed the American national anthem when the teams met in a round-robin match in Montreal, which was followed by three fights in the first nine seconds of the game.

Canada defeated the US 3-2 in overtime on Thursday to win the Four Nations Face-Off final after Donald Trump's latest "51st state" gibe.

Connor McDavid scored at 8:18 of overtime in the 4 Nations Face-Off championship game to give Canada a 3-2 victory over the United States on Thursday night as the North American rivals turned what had