2006 Tour de France winner under fire for possible testosterone use

Floyd Landis, 2006 winner of the Tour de France, was accused of using synthetic testosterone during his race. He's currently involved in a nine-day arbitration hearing that will decide whether to drop or uphold the positive drug test. At Friday's meeting another pro cyclist, Joe Papp, testified on exactly how testosterone can be used in a race and how it improves performance. Papp, who is currently waiting out a two-year doping suspension, was called to the witness stand by the U.S. Anti-Doping Agency. His testimony disputes claims made by Landis' lawyers stating that testosterone couldn't have helped Landis win and that, because of standard race tests, he wouldn't have tried to use drugs.

Papp displayed a pack of testosterone gel, saying that using the gel had helped him recover between stages of the race and that it's possible to use it undetected. Papp later stated that he tried to race clean for years, but felt the need to dope in order to remain competitive.

Witnesses for the defense included a University of Florida professor, Bruce Goldberger, who took issue with the manner in which Landis' drug tests were done in the laboratory. In his professional opinion, the chain of custody of the samples is unreliable.