Spain\'s Alberto Contador, racing his first Grand Tour since returning from a two-year doping ban last month, won his second Tour of Spain crown on Sunday. The Saxo-Bank rider, also a two-time Tour de France winner who lost his 2010 Tour and 2011 Giro titles after testing positive for clenbuterol in 2010, safely negotiated the 21st and final 115km largely flat stage from Cercedilla to Madrid to claim victory. Germany\'s John Degenkolb of the Argos-Shimano team won the final stage in 2hr 44min 57sec, Contador coming through buried in the main lead peloton in 54th spot. The 29-year-old Contador clocked 84hr 59min 49sec for the race that covered a total distance of 3,300 kilometres, Alejandro Valverde (Movistar) and Joaquim Rodriguez (Katusha) completing an all-Spanish podium. Valverde was 1min 16sec off Contador\'s pace, with long-time leader Rodriguez a further 21sec adrift.