Britain's Bradley Wiggins retained the overall lead in the Paris-Nice as Luis Leon Sanchez won the sixth stage today.

Spanish former champion Sanchez edged out veteran Jens Voigt as the two broke towards the end of today's stage on the final hill.

Team Sky favourite Wiggins still leads by six seconds ahead of Holland's Lieuwe Westra and third-placed American Levi Leipheimer, who is 10 seconds adrift.

Nicolas Roche was 52nd today and he is 22nd overall.