100 metres at the Olympics 40 in 2000 and reached the Olympic semi-finals four years later. (Ottey is also the most frequent participant having competed in the Olympic 100 m an unrivalled six times from 1984 to 2004). The first women's champion, Betty Robinson in 1928, remains the youngest gold medallist for the event at 16 years old, while a 32-year-old Linford Christie became the oldest 100 m Olympic champion in 1992. Since introduction of testing by the IAAF in the early-20th century, female sprinters may be subject to gender verification. This rule was first formally applied to the 100 m at the 1968 Mexico
4 × 100 metres relay at the Olympics than three golds in the men's or women's event. Jamaica (four wins, nine medals), Great Britain (two wins, fifteen medals) and the Soviet Union (two wins, eleven medals) are the next most successful nations. Participants in this event are often competitors in the 100 metres and 200 metres individual Olympic events (and, less commonly, the sprint hurdles). Marion Jones was stripped of her Olympic medal from the 2000 Olympic Games in Sydney, but the American result was allowed to stand and the remainder of the team are still listed as bronze medallists, as the rules of the time prohibited to