was later disqualified and stripped of her medals after admitting to taking performance-enhancing drugs. An Olympic double of 200 m and 400 m was first achieved by Valerie Brisco-Hooks in 1984, and later by Michael Johnson from the United States and Marie-José Pérec of France both in 1996. Usain Bolt is the only man to repeat as Olympic champion, Bärbel Wöckel (née Eckert), Veronica Campbell-Brown and Elaine Thompson-Herah are the three women who have repeated as Olympic champion. The men's world record holder is Usain Bolt of Jamaica, who ran 19.19 s at the 2009 World Championships. The women's world record holder is Florence Griffith-Joyner of the United States, who ran 21.34 s at the 1988 Summer Olympics. The reigning Olympic champions are Andre De Grasse (CAN) and Elaine Thompson-Herah (JAM). The reigning World Champions are Noah Lyles (USA) and Shericka Jackson (JAM). Races run with an aiding wind measured over 2.0 metres per second are not acceptable for record purposes. Continental records Updated 22 October 2019. Notes Represents a mark set at a high altitude. All-time top 25 Men (outdoor) Updated September 2022 Assisted marks Any performance with a following wind of more than 2.0 metres per second is not counted for record purposes. Below is a list of wind-assisted times (equal or superior to 19.70). Only times that are superior to legal bests are shown: Kenny Bednarek ran 19.49 (+6.1 m/s) at high altitude in Hobbs, New Mexico on 17 May 2019, 19.65 (+4.0 m/s) on 10 April 2021 in Miramar, Florida, and 19.65 (+3.2 m/s) in Lausanne on 26 August 2021. Andre De Grasse ran 19.58 (+2.4 m/s) in Eugene, Oregon on 12 June 2015. Leroy Burrell ran 19.61 (+4.1 m/s) in College Station, Texas on 19 May 1990. Until 1 August 1996, it was the best performance in any condition. Terrance Laird ran 19.64 (+5.6 m/s) at high altitude in Hobbs, New Mexico on 17 May 2019. Women (outdoor) Updated July 2022 Assisted marks Any performance with a following wind of more than 2.0 metres per second is not counted for record purposes. Below is a list of wind-assisted times (equal or superior to 21.80). Only times that are superior to legal bests are shown: Tamara Clark ran 21.72 (+3.1 m/s) in Austin, Texas on 26 March 2022. Kimberlyn Duncan ran 21.80 (+3.2 m/s) in Des Moines, Iowa on 23 June 2013. Men (indoor) Updated February