The race of shame: the 1988 Olympic 100m
1st Ben Johnson (Canada)
Tested positive for anabolic steroids after the race. Stripped of his medal and banned for two years, then for life in 1993.
2nd Carl Lewis (US)
It is alleged that he should have been serving a two-year ban after testing positive for stimulants at the US Olympic trials two months earlier.
3rd Linford Christie (UK)
Tested positive for pseudoephedrine in Seoul but cleared by the IOC disciplinary committee who accepted his explanation that it came from ginseng tea. Banned for two years in 2000.
5th Dennis Mitchell (US)
Tested positive for high levels of testosterone in 1999. Banned for two years. Claimed that the result was because he'd had sex and drunk six beers.
6th Desai Williams (Canada)
Implicated in the 1989 Dubin inquiry into the use of banned drugs by Canadian athletes.