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Page last updated at 16:52 GMT, Tuesday, 25 January 2011

Novak Djokovic 'lucky' to win after lens problems

Novak Djokovic

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Serb Novak Djokovic says semi-final opponent Roger Federer is the "best player ever", and admits he was "lucky" to win his second set tie-break against Tomas Berdych, conceding he had problems with a contact lens.

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