 Team Sky then released some of Froome's power data from stage ten in an attempt to calm claims of blood or mechanical doping.Froome maintained his lead during the final week's Alpine mountain stages, although he lost 32 seconds to Quintana, who had emerged as his principal rival, on the penultimate mountain stage to La Toussuire, and another 86 seconds on the final summit finish on Alpe d'Huez, giving him a lead of 72 seconds over Quintana in the general classification.In addition to winning the race overall he clinched the mountains classification.