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
1500 metres at the Olympics win) and, soon after, Sebastian Coe became the first man to do so in 1984. No athlete of either sex has won more than two medals. Historically, athletes in this event have also had success in the 800 metres at the Olympics. Kelly Holmes was the last athlete to win both events at the same Olympics in 2004. 2012 1500m gold medalist Taoufik Makhloufi made both podiums without winning gold in 2016. Great Britain is the most successful nation in the event, having won six gold medals and a total of fourteen. Kenya has the next highest number of gold