Florence Griffith-Joyner celebrates her victory in the 100-meter dash at the 1988 Olympic Games in Seoul, Sept. 25, 1988. She was clocked at 10.54 seconds, to break an Olympic record. Behind her is Natalia Pomoshchnikova of the Soviet Union, who finished sixth in the race. (AP Photo/Dieter Endlicher)

PHOTO: EAST NEWS KANADYJCZYK BEN JOHNSON PODCZAS BIEGU FINALOWEGO NA 100 METROW NA OLIMPIADZIE W SEULU USTANAWIA REKORD SWIATA.POZNIEJ ZDYSKWALIFIKOWANY ZA DOPING Jamaican-born Canadian Ben Johnson (c) crosses the finish line to win the Olympic 100m final in a world record 9.79 seconds 24 September 1988 at Seoul Olympic Stadium. Carl Lewis from USA (l) took second place. Johnson, nicknamed as "Human Bullet" for having become the fastest man in 1987 Rome's World Championships, after he had clocked a world record time of 9. 84 sec. He was banned for two years in Seoul after testing positive for the steroid stanolozol shortly after winning the 100m. Johnson made a comeback in 1992 at the Barcelona Olympics, only to test positive again a year later, this time for testosterone, incurring a life-time ban. In July 1997 the disgraced sprinter told the Argentinian newspaper La Nacion: "I know I am the fastest man in the world and no-one can deny it. My only mistake was to run too fast. Drugs cannot make you break a world record, they only improve you by 25 percent."

Ben Johnson of Canada gestures after winning the 100-meter dash beating Carl Lewis of the United states, behind at right, on September 24, 1988 at the Olympics in Seoul. The International Olympic Committee withdrew Johnson's gold medal for this event after he tested positive for steroids. (AP Photo/Fred Chartrand)

PHOTO: EAST NEWS BEN JOHNSON NA OLIMPIADZIE W SEULU W 1988 ROKU Jamaican-born Canadian Ben Johnson practices at the Seoul Olympic Stadium 15 March 1988. Six month later, 24September, at the same place, Johnson win the Olympic 100m final in a world record 9.79 seconds. Johnson, nicknamed as "Human Bullet" for having become the fastest man in 1987 Rome's World Championships, after he had clocked a world record time of 9. 84 sec. He was banned for two years in Seoul after testing positive for the steroid stanolozol shortly after winning the 100m. Johnson made a comeback in 1992 at the Barcelona Olympics, only to test positive again a year later, this time for testosterone, incurring a life-time ban. In July 1997 the disgraced sprinter told the Argentinian newspaper La Nacion: "I know I am the fastest man in the world and no-one can deny it. My only mistake was to run too fast. Drugs cannot make you break a world record, they only improve you by 25 percent."

Friendly rivals Ben Johnson of Canada, right, and American Carl Lewis stand on the winner's podium after receiving their medals for the 100-meter run at the World Track and Field Championships in Rome, Italy, Sunday, August 30, 1987. Johnson beat Lewis and bettered the world record mark to 9.83 seconds. (AP Photo/Dieter Endlicher)