Sky has blown open the Tour de France 2013. Two of its riders, Chris Froome and Richie Porte, have taken the first two positions in Stage 8, the first high mountain stage of this year’s Tour. Froome won the 195-km ride from Castres to Ax 3 Domaines in 5:03:18. Porte finished second at 0:51, and Alejandro Valverde (Movistar) finished third at 1:08. Froome is the new maillot jaune.