A one-touch pass to forward Alex Morgan in the 82nd minute of the match against France sent her into France’s penalty area, where she drew the keep out of the goal, then struck to put American ahead 3-1.
'Megan came off the bench and changed the game,' US Coach Pia Sundhage told Salient News.
Meanwhile France's coach Bruno Bini lamented their missed chances. 'We had a lot of chances and played a very good game except the first ten minutes,' said Bini. 'We were as good as we could have been. It was very physical and we stood up to this. But they have a lot of experience.'
The Sports Karma Gods punish the Brazil womens soccer team: USA advances
World Cup goal scorer Heather O'Reilly's left on the bench for Sweden game
The US will now face Japan, who beat Sweden 3-1 in the final on Sunday, on July 17th.
If successful they will become the first team to win the Women’s World Cup three times, after winning titles in 1991 and 1999.
It's been a banner year for the US team. As well as being ranked number one in the world by FIFA the US are also the reigning and three-time Olympic champions.
Top Irish names for girls