Evidence in favor of Armstrong:
1. Passed drug tests during his extraordinary run of Tour titles from 1999 to 2005.
Evidence against Armstrong:
1. Walked away from the sport in 2011 following a two-year federal criminal investigation on doping charges. He was not convicted, however.
2. USADA announced it had evidence Armstrong used banned substances and methods, and also said it had blood tests from 2009 and 2010 that were 'fully consistent' with blood doping.
3. Emails written by Armstrong's former teammate Floyd Landis, who was stripped of his 2006 Tour de France title after a positive drug test, detailing allegations of a complex doping program on the team.
4. USADA also said it had 10 former Armstrong teammates ready to testify against him. Other than suggesting they include Landis and Tyler Hamilton, both of whom have admitted to doping offenses.
Innocent or Guilty? You decide.
As for me, it's likely he did cheat. But every one else doped too. He basically cheated on a level playing field against other cheaters and came out on top.