USA 4-3 Canada: Watch Alex Morgan's Last-Gasp Extra-Time Winner

The U.S. women just did it again.

In another epic knockout match, the United States came from behind to book a date with Japan in a tournament final.

Last year, it was Abby Wambach's header in the 122nd minute against Brazil in the World Cup quarterfinal that sent the match to penalty kicks and made these women national heroes.

It was a bit more complicated this time, but the result was the same.

Three times the U.S. trailed continental rivals Canada, as Christine Sinclair put forth a goal-scoring masterpiece with her hat-trick.

At 1-0 down in the 54th minute, it was a freak goal from a Megan Rapinoe corner that got them back on level pegging.

Trailing 2-1 in the 70th minute, it was a more straightforward goal for Rapinoe, as she lashed a shot from the edge of the box.

Finally, 3-2 down in the 80th minute, a penalty kick for Abby Wambach sent the match to extra time.

There, came Alex Morgan with the most dramatic of goals.

In the 123rd minute, Morgan rose to meet Heather O'Reilly's looping corner and headed the ball over keeper Erin McLeod's stretching hands for the closest thing to a golden goal one can get.

It was bad luck for the Canadians, who played amazingly in defeat. They will still get a chance to medal, though, as they take on France Thursday for the bronze medal.

For the USA, it's yet another dramatic win for the national team, adding to the women's World Cup quarter against Brazil and the men's World Cup group match against Algeria two years ago.

In Thursday's gold medal match, the U.S. will take on their foe in a rematch of the World Cup final that Japan won on penalties last year.

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