Seven-time Tour de France winner Lance Armstrong faced a deadline Thursday, August 23, to formally challenge sweeping doping allegations from the U.S. Anti-Doping Agency or accept sanctions that could include a lifetime ban from the sport and potentially strip him of his titles. In this photo, Armstrong with team RadioShack rides in a breakaway during stage 16 of the Tour de France on July 20, 2010 in Pau, France. (Photo by Spencer Platt/Getty ...
more Seven-time Tour de France winner Lance Armstrong faced a deadline Thursday, August 23, to formally challenge sweeping doping allegations from the U.S. Anti-Doping Agency or accept sanctions that could include a lifetime ban from the sport and potentially strip him of his titles. In this photo, Armstrong with team RadioShack rides in a breakaway during stage 16 of the Tour de France on July 20, 2010 in Pau, France. (Photo by Spencer Platt/Getty Images)
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