Martin Whitmarsh plays down Lewis Hamilton comments

McLaren team principal Martin Whitmarsh admits Lewis Hamilton's troubles this season "are more complex" than just the pressure put on him by the success of team-mate Jenson Button.

Whitmarsh had made the initial comments about the 2008 world champion after the Indian Grand Prix.

Hamilton dismissed the claims by Whitmarsh as "rubbish" adding that his problems were "more personal".

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