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The 100 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious 100 m title after the 100 metres at the Olympics .
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.
International Association of Athletics Federations ... IAAF Statistics Book 2009 – World record progressions (Men's from page 202–222, women's from page 292–309)
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seconds was retrospectively recognised to as the world record after the team's time of 37.10 at the 2008 Olympics was rescinded after the disqualification of Nesta Carter (who was not present in the World Championships team).
World records (current olympic events only) as of 13 October 2024 Bolded, italicized records with two asterisks (**) are pending ratification by World Athletics . Event
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]