Allegations of performance-enhancing drug use followed Tour de France champion Lance Armstrong throughout his career and even after. A look at some of the recent developments:
- May 2010: Floyd Landis, who won the Tour in 2006 but was stripped of the title for drug use, admits to cheating and accuses Armstrong of doping in a series of emails to sponsors and sports officials.
- Summer-Fall 2010: Federal investigators call several prominent cyclists and others with Armstrong ties to testify before a Los Angeles-based grand jury probe into pro cycling. Armstrong's lawyers complain about leaks to the media regarding witnesses.
- November 2010: An American delegation including lead federal investigator Jeff Novitzky, U.S. Anti-Doping Agency CEO Travis Tygart, and prosecutor Doug Miller holds secret meetings in France with European authorities as part of the probe.
- February 2011: Armstrong retires from cycling for the second and final time.
- May 2011: Former Armstrong teammat...