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 4 × 100 metres relay over stepping the Lane Boundary. Athletics at the 2012 Summer Olympics – Men's 4 × 100 metres relay ] The men's 4 × 100 metres relay competition at the 2012 Summer Olympics in London, United Kingdom, was held at the Olympic Stadium on 10–11 August. On 11 August, the Jamaican national team, led by Nesta Carter, Michael Frater, Yohan Blake and Usain Bolt, won the gold medal and broke their own world record of 37.04 set at the 2011 World Championships in Athletics, with a time of 36.84. Carter did not start well, and Trell Kimmons of the United States