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In this July 6, 2010, photo, Lance Armstrong grimaces prior to the start of the third stage of the Tour de France cycling race in Wanze, Belgium. Armstrong said on Thursday, Aug. 23, 2012, that he is finished fighting charges from the United States Anti-Doping Agency that he used performance-enhancing drugs during his unprecedented cycling career, a decision that could put his string of seven Tour de France titles in jeopardy. (AP Photo/Christophe Ena)