Vinokourov fulfilled his promise to Contador and served as his teammate's super-domestique during the Tour, which Contador completed ahead of Andy Schleck and Denis Menchov. However Contador's victory was vacated when it was determined he had tested positive for a minute amount of the banned drug clenbuterol. Despite this, Astana still saw some measure of success in the Tour, with Vinokourov winning stage 13 after a solo attack over the last climb of the day and a determined effort to hold off the field. He summed up his triumph: