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Lewis's mark, which equalled the standing record at the time, was never officially ratified by the IAAF as a world record. The women's world record has not yet been beaten at the championships. Shelly-Ann Fraser-Pryce is the most successful athlete of the event as the only person, male or female to win five titles, she also has the most medals ...
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.
All of these factors make track and "football 40" performances essentially impossible to compare. The world best time for a "football 40" is 4.17 by Deion Sanders, while the extrapolated best for an Olympic-level athlete (including reacting to a starting gun) is 4.24 by Maurice Greene at the 2001 World Championships in Athletics.
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.
(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.
The men's world record has been improved upon twelve times since electronic timing became mandatory in 1977. [17] The current men's world record of 9.58 s is held by Usain Bolt of Jamaica, set at the 2009 World Athletics Championships final in Berlin, Germany on 16 August 2009, breaking his own previous world record by 0.11 s. [18]
International Association of Athletics Federations ... IAAF Statistics Book 2009 – World record progressions (Men's from page 202–222, women's from page 292–309)
The World record progression 100 metres is split by gender: Men's 100 metres world record progression; Women's 100 metres world record progression