Team Canada's Brandon Hagel said fighting Team USA's Matthew Tkachuk was "for the flag," not "for the cameras," on Saturday in their 4 Nations Face-Off game.

Canada's Connor McDavid #97 celebrates after his game-winning goal against the United States during an overtime period of the 4 Nations Face-Off championship hockey game, in Boston, on Thursday.

Team USA 4 Nations Face-Off GM Bill Guerin joins 'America's Newsroom' to discuss the United States clinching a spot in the championship game of the tournament by beating Canada in a heated game.

The 4 Nations tournament began on Wednesday, when Canada topped Sweden 4-3 in overtime. Canada then lost to Team USA, 3-1, on Saturday in what will go down in the history books as an all-time classic.