Ray Stewart JAMAICA
Fastest time: (1991)
Doping record : In 2008, when Stewart was coaching several top athletes, he was implicated in a drugs scandal and charged by USA Track and Field for the alleged trafficking and administration of a prohibited substance. Stewart said the drugs were for his own use, but he was banned from the sport for life.
Robson da Silva BRAZIL
Fastest time: (1988)
Doping record : Never linked to drugs.
In 2004, Armstrong finished first, 6 minutes 19 seconds ahead of German Andreas Klöden . Ullrich was fourth, a further 2 minutes 31 seconds behind. Armstrong won a personal-best five individual stages, plus the team time trial. He became the first biker since Gino Bartali in 1948 to win three consecutive mountain stages; 15, 16, and 17. The individual time trial on stage 16 up Alpe d'Huez was won in style by Armstrong as he passed Ivan Basso on the way despite having set out two minutes after the Italian. He won sprint finishes from Basso in stages 13 and 15 and made up a significant gap in the last 250 m to nip Klöden at the line in stage 17. He won the final individual time trial, stage 19, to complete his personal record of stage wins. 
Doping entered track and field on the coattails of increased earning potential. The type of drug has changed over the years. There was the anabolic steroid, burgeoning in the Hitler era, reaching a frenzy with the governmental doping regimes of the East Germans in the 80s, and morphing again into designer drugs like “The Clear” made to elude testing. There was Human Growth Hormone, erythropoietin (EPO), and its derivatives, like CERA. Dopers have always had to stay one step ahead of those trying to keep the sport clean. Among those caught in the crossfire between were gold medalists and track celebrities Marion Jones (sprints/jumps) and Rashid Ramzi (1,500m). Both were stripped of their medals.