Justin Gatlin – Gatlin tied Asafa Powell’s world record of 9.77 seconds in the 100 meters in May. He won the 100 at the 2004 Olympics and 100 and 200 at the 2005 world championships. Gatlin said on Saturday he tested positive for testosterone or other steroids after a relay race in Kansas in April. If found guilty, he faces a lifetime ban for a second offense. In college, he tested positive for a banned substance contained in medication for attention deficit disorder, and his original two-year ban was halved by the IAAF.

Ben Johnson – The Canadian tested positive for the steroid stanozolol after winning the 100 at the 1988 Seoul Olympics in a world-record time of 9.79. He was stripped of the gold medal and the record and subsequently banned for two years. He tested positive for testosterone in 1993 and was banned for life.

Tim Montgomery – Montgomery was crowned “fastest man on earth” after running a world-record 9.78 in Paris in 2003. In 2005, the American was banned for two years based on evidence gathered in the criminal investigation of BALCO. All of his performances were wiped off the books, including the world-record time. He retired after the ruling.

Dwain Chambers – The British 2002 European 100 champion was banned for two years in the BALCO case after testing positive for the steroid tetrahydrogestrinone – THG – in an out-of-competition control in Germany in August 2004. After admitting to using drugs since January 2002, he was forced to repay earnings and appearance fees over the period.

Linford Christie – The 1992 Olympic champion tested positive for the steroid nandrolone in February 1999 when he was virtually retired, and was banned for two years.

Kelli White – White tested positive for the stimulant modafinil at the 2003 U.S. and world championships, and was stripped of her world titles in the 100 and 200. She confessed to using banned blood doping, steroids, and testosterone, and was banned for two years in the BALCO case.

Torri Edwards – As a result of White being stripped of her 100 world title, Edwards was crowned 2003 champion. The American tested positive for the stimulant nikethamide in 2004, blaming the result on glucose tablets. Her two-year ban was reduced to one after the drug was downgraded by the World Anti-Doping Agency.

Dennis Mitchell – A member of the U.S. 400 relay team that won gold at the 1992 Olympics, the four-time U.S. 100 champion tested positive for testosterone in July 1998 and was banned for two years. He argued the levels found in his sample were a result of a bout of heavy beer drinking and lovemaking.

Katrin Krabbe – The German, world champion in the 100 and 200 in 1991, was suspended after testing positive for the steroid clenbuterol in 1992.

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