Lance Armstrong May Go Down in History as a Cheater

Neal Karlinsky discusses the battle over legend's use of performance drugs.
3:00 | 08/25/12

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Transcript for Lance Armstrong May Go Down in History as a Cheater
Now, to lance armstrong, the bike racing legend who beat cancer and beat the best cyclists on the planet. Now, though, he may go down as a cheater who allegedly juiced himself. This morning, armstrong is back on his bike and in full damage control. Here's abc's neal karlinsky. Reporter: Ts weekend, lance armstrong is maintaining his image. And he isn't hiding. He will begin his lifetime ban with, of all things, competing in a race, near his home in aspen. Excited to be racing, he tweeted. This, on the same day the u.S. Anti-doping agency banned him for life. A ban that doesn't include such small events. The fallout for armstrong is still being measured. WILL HE KEEP HIS tour de France titles? No, according to usada, which says he they have absolute authority to strip his seven win. But it's not without process and speed bumps. Will he keep his sponsorship? In the case of his biggest sponsor, nike, yes. In a statement, a nike official says, we are saddened that lance armstrong may no longer be able to participate in certain competitions. While adding, nike plans to continue to support lance and the lance armstrong foundation. Finally, will live strong, his cancer-fighting foundation, survive the epic fall from grace? Armstrong tweeted that donations were up 25-times over yesterday, a sign of support. But his new label of a drug cheat may make future endorsements for lance and future donations for live strong harder to come by. Though the public has long been divided. The thing about armstrong is, he was so polarizing either way. People loved him or they really hated him. And I'm not sure that this changes that. Reporter: It's not just about his popularity and sporting achievements. Sources tell abc news, at least two multimillion-dollar civil suits, accusing armstrong of being a fraud, are now being explored. For the fallen champion, doping charges may just be the beginning of his problems. For "good morning america," neal karlinsky, abc news, seattle.

This transcript has been automatically generated and may not be 100% accurate.

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