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 1908 Summer Olympics – Men's 100 metres finish. Rector again won easily, tying the Olympic record for the second time. Cartmell and Robertson ran a tight race, with Cartmell winning by about a foot. The final race of the 100 metres began at 4:15 p.m. on 22 July. With Walker and Rector having already tied the Olympic record before the final, it was widely expected that the final race of the 100 metres would be an exciting match between those two runners. Walker got off to a quick lead, but Rector caught him about midway through the race and passed him. Walker responded with a great effort,