25 July 2012 Last updated at 10:57

US MotoGP preview: Riders look ahead to Laguna Seca

MotoGP's top riders look ahead to Sunday's US MotoGP at California's legendary Laguna Seca circuit.

Ducati's Valentino Rossi describes riding at Laguna as "great" but "very difficult", while reigning world champion Casey Stoner believes the right tyre selection will be the key to success around the 3.602km circuit.

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