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Spain's Alberto Contador (L) rides ahead of France's Warren Barguil 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 / LIONEL BONAVENTURE (Photo credit should read LIONEL BONAVENTURE/AFP via Getty Images)

Spain's Alberto Contador (L) rides ahead of France's Warren Barguil 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 / LIONEL BONAVENTURE        (Photo credit should read LIONEL BONAVENTURE/AFP via Getty Images)