 Alexander Wurz was fastest in the first Friday practice session in the Williams-Cosworth, 0.004 seconds faster than BMW Sauber's third driver, Sebastien Vettel and Jenson Button completed the top three, over six tenths slower than Wurz.Michael Schumacher, Neel Jani and Alexandre Prémat completed the top six; all within 0.07 seconds of each other.While Schumacher's championship rival, Fernando Alonso, did not set a time along with his team mate, Giancarlo Fisichella.