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 2016 Summer Olympics – Men's 4 × 100 metres relay Athletics at the 2016 Summer Olympics – Men's 4 × 100 metres relay The men's 4 × 100 metres relay competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil was held at the Estádio Olímpico João Havelange on 18–19 August. Jamaica entered as the reigning 2015 World Champions and the defending Olympic champions, having set new world and Olympic records at the 2012 London Olympics. The United States were the next strongest team. The 2016 world leading time prior to the event was held by Great Britain, at 37.78 seconds. Other strong entrants were 2012 Olympic silver medallists