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The men's world record has been broken or equalled at the competition three times: by Carl Lewis in 1987 and 1991, and by Usain Bolt in 2009. [1] Ben Johnson beat Lewis in the 1987 final, but his win and record were subsequently rescinded after his admission to long-term steroid use . [ 2 ]
Except in road events (road running and race walking), the performance must be set in a single-sex race, [2] with the sole exception of the mixed-sex 4 × 400 m relay, introduced by World Athletics in 2017. [3] All team members in a relay race must be of the same nationality.
The first manual time of 9.9 seconds was recorded for Bob Hayes in the final of the 100 metres at the 1964 Olympics. Hayes' official time of 10.0 seconds was determined by rounding down the electronic time of 10.06 to the nearest tenth of a second, giving the appearance of a manual time.
The World Athletics Championships is a biennial event which began in 1983. Organised by the International Association of Athletics Federations (IAAF), the World Championships are a competition comprising track and field athletics events available to male and female athletes from any of the IAAF's 213 member federations.
The 100 metres, or 100-meter dash, is a sprint race in track and field competitions. The shortest common outdoor running distance, the 100-meter (109.36 yd) dash is one of the most popular and prestigious events in the sport of athletics.
Gout Gout of Queensland wins his Boys' U18 100m heat in 10.04 seconds with a +3.4 tail-wind during the 2024 Chemist Warehouse Australian All Schools Athletics Championship at Queensland Sport and ...
(1) All of the individual events were scored with exponential functions, rather than the linear functions that had characterized all decathlon scoring tables to date. For field events, this was a straightforward statistical procedure; for track events, the reciprocal of the athlete's time, representing speed, was used as the independent variable.
Also, the 2009 Jamaican men's 4 × 100 metres relay team time of 37.31 seconds was retrospectively recognised to as the world record after the team's time of 37.10 at the 2008 Olympics was rescinded after the disqualification of Nesta Carter (who was not present in the World Championships team).