U.S. Olympian Dawn Harper-Nelson SuspendedEast St. Louis native tested positive for banned substance
Lance Armstrong Drops Out of Swimming Event
Lance Armstrong to Make Splash in Return
Winfrey Says Armstrong Interview 'Intense'
Armstrong Tells Oprah He Doped
Armstrong Cuts Formal Ties to Livestrong
Cycling Officials Strip Armstrong of Tour Titles
Armstrong Says He's 7-time Tour de France Champ
US Sprinter Dunn Out of Olympics after Doping Test
Armstrong Sues to Block Doping Charges
Armstrong: Immunity Report Confirms 'vendetta'
USADA Files Formal Charges against Armstrong