Athlete: Marion Jones
: Track & Field
When: Summer 2000

At the conclusion of the 2000 Summer Olympics, Marion Jones was on cloud nine after she won five medals (three gold in the 100m, 200m and 4x400 relay and two bronze in the long jump and 4x100 relay), a first for a female athlete in one Olympic Games. Five years later, Jones' ex-husband C.J. Hunter, who happened to be an Olympic shot-putter himself, testified under oath that he witnessed Marion injecting performance-enhancing drugs into her stomach while in the Olympic Village in Sydney. Initially, Jones denied the accusation to a grand jury but in 2007 she finally admitted to her PED use. She was subsequently sentenced to six months in jail for perjury and check fraud.