Five athletes tested positive for the stimulant bromantan and were disqualified by the IOC, but later reinstated after an appeal to the Court of Arbitration for Sport: swimmers Andrey Korneyev and Nina Zhivanevskaya , Greco-Roman wrestler Zafar Guliyev and sprinter Marina Trandenkova , all from Russia, and the Lithuanian track cyclist Rita Razmaitė . Dr. Vitaly Slionssarenko, physician to the Lithuanian cycling team and team coach Boris Vasilyev were expelled from the games.    The CAS overturned the IOC decision, because bromantan had only recently been added to the prohibited list,  and the athletes and officials were reprimanded.    The Russians had argued that bromantans wasn't a stimulant and thus not banned.  
So Alex Rodriguez admitted to taking steroids during his stint with the Texas Rangers . I’m not surprised, I pretty much excepted it. However, I’m tired of talking about drugs in sports. As a cycling fan, I’m accustom to finding out that a favorite athlete’s performance was tainted by performance enhancing drugs . Cycling has the toughest testing program of any sport and the drugs themselves can have a huge impact on performance, so its natural (although unfortunate) that many professional cyclists are caught cheating.
The Olympic games make clear that all athletes are not created equal, but that hard work and dedication can give an athlete at least an outside chance of victory even if competitors come from the deeper end of the gene pool. “Elite performance is necessarily a combination of genetically based talent and training that exploits those gifts,” Roth says. “If you could equalize all environmental factors, then the person with some physical or mental edge would win the competition. Fortunately those environmental factors do come into play, which gives sport the uncertainty and magic that spectators crave.”