It didn't take very long for McLaren to stop praising new driver Sergio Perez and start urging him to step up his game. Team boss Martin Whitmarsh says the Mexican is not happy with his performance telling the press:   'Sergio is not satisfied with his performance this weekend,' said Whitmarsh. 'He is a young driver and he had a difficult weekend.   'We haven't given him a great car so far, and he is up against someone like Jenson who has done a fantastic job with the car we have given him.   'We, as a team, have to step up and support a young driver who has an enormous amount of talent.   'And with these tyres that are very fragile, with a car that is not quite there...
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