Starting on pole, Alonso protected his lead even after a pit stop on lap 16 but the hard tires on Lewis Hamilton's McLaren car set up a tussle for first place on lap 19.

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Webber had led from pole but Hamilton and Vettel were right with him until the pit stops.

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Barrichello, who started from pole, managed to avoid the chaos on lap one and was leading until his first pit stop on lap 21.

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