SPAIN’S Alberto Contador will begin his challenge to become the first man for 13 years to complete the Giro d’Italia and Tour de France double as he defends his title, starting in Passage du Gois in the Vendee region of western France, tomorrow. “As time goes by, I feel more and more rested [after the Giro] but I’m still a bit in the dark because all I did was rest. I don’t know how I will respond,” he said.