Organizes and underwrites the Union Cycliste Internationale-sanctioned Le Tour de Filipinas race.

FORBES: 2012 Southeast Asian Philanthropists

In the statement on Thursday, Contador's press officer said the rider was first made aware of the test by the UCI (Union Cycliste Internationale) on 24 August.

BBC: Tour de France winner Alberto Contador tests positive

Mr. Armstrong denied to Ms. Winfrey the accusation that he paid off the Union Cycliste Internationale, the sport's international governing body, to get out of a positive test at the 2001 Tour de Suisse.

WSJ: Lance Armstrong Admits to Doping, 'One Big Lie'