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Great Britain's Christopher Froome (C), wearing the overall leader's yellow jersey, climbs the Lacets de Montvernier during the 186,5 km eighteenth stage of the 102nd edition of the Tour de France cycling race on July 23, 2015, between Gap and Saint-Jean-de-Maurienne, French Alps. AFP PHOTO / ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)

Great Britain's Christopher Froome (C), wearing the overall leader's yellow jersey, climbs the Lacets de Montvernier during the 186,5 km eighteenth stage of the 102nd edition of the Tour de France cycling race on July 23, 2015, between Gap and Saint-Jean-de-Maurienne, French Alps.  AFP PHOTO / ERIC FEFERBERG        (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)