The World Cup-winning United States fell to a surprise 1-0 defeat to Canada in the semi-finals of the women’s Olympic football tournament on Monday.

Jessie Fleming grabbed the winning goal with a 75th-minute penalty.

In the gold medal match, Canada will face the winner of the other semi-final between Australia and Sweden which is being played later on Monday.

The crucial moment, in a game that had produced little incident, came when Tierna Davidson challenged Deanne Rose on the edge of the penalty area. After a video review, a penalty was awarded.

Canada’s veteran striker Christian Sinclair initially had the ball in her hands, but Fleming took the responsibility and kept her cool to slot home.

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The U.S., pre-Games favourites for the gold medal, went close to an equalizer when Carli Lloyd struck the bar with a header but Canada held on for a famous victory – and their first-ever appearance in the Olympic final.

The Americans had won the Olympic women’s football tournament four times and have not been beaten by Canada for over 20 years.