By David Gold

Rachel Buehler_of_USA_is_tackled_by_Marie-Laure_Delie_of_FranceJuly 25 - Reigning Olympic champions, the United States, were given an almighty scare by France in their opening match of defending their women's football title, but eventually came through to register a 4-2 win at Hampden Park in Glasgow.

On the first day of Olympic action at London 2012, they fell behind early on when Gaëtane Thiney capitalised on an error by Amy LePeilbet, whose headed clearance from a long ball landed at the Frenchwoman's feet.

She took advantage of the space offered by LePeilbet's failure to track the flight of the ball to curl past Hope Solo.

France stunned the US by going two up minutes later, and the second goal was a wonderful finish from Marie Laure Delie.

After the ball had rolled loose into her path on the edge of the area, Delie made space with some fancy footwork before trying to play in Élodie Thomis.

Thomis could not control the ball, but it rolled into Delie's path, and she rifled home a fierce shot.

Marie-Laure Delie_of_France_scores_against_the_USMarie-Laure Delie scores to put France in two goal lead

The reigning champions fought back valiantly though, Abby Wambach showing her quality with a header from a corner within five minutes.

On the half hour, Alex Morgan then latched onto a long ball which the France defence left to chip over Céline Deville.

The comeback was complete 10 minutes into the second period, as Lloyd found space outside the area and fired decisively past Deville.

Alex Morgan then sealed the win after finishing a flowing move.

Megan Rapinoe played in Tobin Heath with a pass which dissected the French defence.

Heath then played the ball across goal for Wambach, who could not quite connect, but it ran through for Morgan to slot into an empty net.

Alex Morgan_of_USA_is_congratulated_by_Megan_Rapinoe_after_scoring_during_the_Womens_Football_first_round_Group_G_MatchAlex Morgan and Megan Rapinoe celebrate after scoring during the Women's Football first round Group G match

Japan, the reigning world champions, also made a winning start, beating Canada 2-1 at the City of Coventry Stadium.

Nahomi Kawasumi scored following intelligent play from Shinobu Ohno, who held the ball up in the area at the end of a flowing move.

She then backheeled the ball into Kawasumi, who found herself free on goal, and calmly curled the ball home.

Captain and World Player of the Year, Aya Miyama then made it two, before Melissa Tancredi pulled one back for the Canadians.

There was a baptism of fire for Cameroon, who faced Brazil, aiming for their first ever football gold, at the Millennium Stadium in Cardiff.

Francielle fired the Brazilians in front with a free-kick after six minutes, before a header from Renata Costa doubled the lead two minutes later.

Brazil saw out the match with two goals from five-time World Player of the Year Marta and one from Cristiane to secure a 5-0 win.

Raissa Feudjio_of_Cameroon_battles_with_Francielle_of_BrazilRaissa Feudjio of Cameroon battles with Francielle of Brazil

World Cup semi-finalists Sweden were rampant in their opening match against South Africa at the City of Coventry Stadium.

They were 3-0 up at half time after goals from Nilla Fischer, Lisa Dahlkvist and Lotta Schelin, and also hit the woodwork three times.

South Africa pulled one back with possibly the goal of the day as Portia Modise struck a superb lob from near the half way line.

Schelin then scored again to seal the Swedish win.

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