Lewis Hamilton "under pressure" from Jenson Button

McLaren boss Martin Whitmarsh believes that Lewis Hamilton will be unhappy at being out-performed by teammate Jenson Button this season.

Button is currently second in the standings, 38 points ahead of the 2008 champion Hamilton and Whitmarsh feels that the gap between the two British drivers will be distressing Hamilton.

"Lewis, the great, exciting driver that he is, will not like being beaten by Jenson," said Whitmarsh. "For any driver, the first driver you want to beat is your teammate.

"Lewis will be feeling under pressure because of the great performances from Jenson at the moment.

"I don't want him to enjoy being beaten by his teammate. I want him to try to beat Jenson, just as I want Jenson to try to beat Lewis."

Hamilton finished seventh in yesterday's Indian Grand Prix, a race which was won by Sebastian Vettel.