Before Lance Armstrong, before Floyd Landis, there was Greg LeMond. He won three Tour de France titles between 1986 and 1990 and now worries about the future of cycling.
"I'm incredibly disappointed," LeMond told ABC News. "I really feel bad for his [Landis'] family. Floyd is going to have to go through a difficult period here. I hope that he could actually have the courage to come forward and help the sport right now. I think that's what is really needed. We need transparency, because by taking Floyd out, you're just taking one part of the problem out."
The International Cycling Union said Landis' backup urine sample confirmed the initial test results that showed higher-than-allowable levels of testosterone.
Landis was immediately released from the Swiss team, Phonak, and the Tour de France director said he is considered the race champion. Landis also faces a two-year ban from the cycling, but he continues to deny any wrongdoing and vowed to clear his name.
"I have never taken any banned substance, including testosterone," Landis, 30, said in a statement. "I was the strongest man at the Tour de France, and that is why I am the champion."
Earlier this week, the New York Times, citing a source from the International Cycling Union, reported that a second analysis of Landis' "A" sample had detected synthetic testosterone that could only have originated externally. Landis' personal doctor, Brent Kay, also confirmed to the Times that the test found the man-made hormone.
According to LeMond, Landis is just the tip of the iceberg, and the doping problem extends to teams, managers and suppliers of doping products.
"I think it's a wake-up call," he said. "There's an underlying problem for years, surfaces [every] one or two years, hurts me incredibly. It's almost where I don't know what to believe in the sport. It will take this type of shock to cycling to help clean it up."
Even still, LeMond said that the cycling community is much more vigilant about anti-doping efforts than other sports and is more aggressive when it comes to testing.
"It still doesn't seem to be fixing the problem," he said. "I think it really needs to be where they can provide some leniency of the person who comes forward and break the supply chain of what's going on."
Landis pointed to other factors, such as his naturally high testosterone levels and the fact that he drank whiskey the night before, as possibly causing his elevated levels.
Landis has a bad hip and a thyroid condition, both of which require medications. He gets cortisone injections for the hip and uses a synthetic hormone for the thyroid. There has been some speculation that those drugs could have caused the positive result, but doctors polled by the ABC News' medical unit said those medications would not affect the doping test.
Nevertheless, LeMond said it will be very hard for Landis, whose stunning come-from-behind victory looked like it would make him a legend, to appeal the ruling.
"I think almost impossible," LeMond said. "I think for the first time, they had made sure the protocols were strictly followed. He would have to find out that somebody sabotaged, and the [saboteur] would have to come forward."