The United States set up a semi-final showdown against world champions Germany after a 2-1 victory over Japan in the women's football on Friday.
Abby Wambach scored her 17th goal in 18 games
Abby Wambach scored the winner in the 58th minute when she sprung the off-side trap for a simple tap-in.
Elsewhere, Germany secured a 2-1 win over Nigeria thanks to a winner from Connie Pohlers while Sweden beat Australia with the same scoreline.
Formiga and Cristiane scored two goals each as Brazil thrashed Mexico 5-0.