FILE - In this Feb. 28, 2011, file photo, former cycling champion Lance Armstrong smiles during a news conference at the Cedars-Sinai Hospital in Los Angeles. The U.S. Anti-Doping Agency on Wednesday, July 11, 2012, granted Armstrong an extension of up to 30 days to contest drug charges while the seven-time Tour de France winner challenges the case in federal court. (AP Photo/Damian Dovarganes, File)
Armstrong declines to defend himself in doping case
Seven-time Tour de France winner Lance Armstrong decided not to formally challenge sweeping doping allegations from the U.S. Anti-Doping Agency.