Rosberg fastest in practice

Williams driver Nico Rosberg clocked the fastest laps of both practice sessions as the new Formula 1 season burst into life in Melbourne.

Toyota, Brawn GP and Williams - who all fought off a Thursday protest about the legality of their cars - shone the brightest on an intriguing afternoon.

Britain's Lewis Hamilton, the world champion, struggled in his McLaren to finish 16th then 18th.

Red Bull put in a strong second session while Ferrari had a mixed day.

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