(AGENCE FRANCE-PRESSE) — Lance Armstrong has stepped up his attack on the US Anti-Doping Agency, saying the credibility of its case against him has been undermined by the fact that two key witnesses are self-confessed dope cheats.
Armstrong, a seven-time Tour de France champion, questioned the credibility of Floyd Landis and Tyler Hamilton, his former teammates, in a letter to USADA from his lawyer dated Wednesday and obtained by The Washington Post.
USADA is hoping those two witnesses can help prove Armstrong used performance-enhancing drugs during his career. Both have both accused Armstrong of doping.
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