Stanford alumni Mike and Bob Bryan are assured of at least a silver medal at the 2012 London Olympics games after the top-seeded pair defeated Julien Benneteau and Richard Gasquet of France 6-4, 6-4 in the semifinals of the men's doubles at the All England Club on Friday.

The Bryans play the winner of the other semifinal between David Ferrer and Feliciano Lopez of Spain and Michael Llodra and Jo-Wilfried Tsonga of France.

The pair have 11 Grand Slam titles, but are hungry for that gold medal.

Meanwhile in singles action, Wimbledon champ Roger Federer outlasted Argentina's Juan Martin del Potro 3-6, 7-6, 19-17 to advance to the men's singles gold-medal match. That match that lasted an exhausting 4 hours, 25 minutes.

Federer will face the winner between Britain's Andy Murray and Serbia's Novak Djokovic. Federer has never won an Olympic gold medal in singles action.

Check out SI's complete medal tracker here.

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