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
Athletics at the 2012 Summer Olympics – Men's 100 metres Athletics at the 2012 Summer Olympics – Men's 100 metres The men's 100 metres competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 4–5 August 2012. The competition comprised four rounds: a preliminary round for entrants without the minimum qualifying standard, a heats round, followed by three semi-finals of eight athletes each, which then reduced to eight athletes for the final. Leading up to this Olympics, defending champion Usain Bolt was the star of the sport having set world records in winning the 100 metres and 200 metres in the previous Olympics,