19.30
100 meter dash
Arthur Porritt won bronze at the 1924 Summer Games in Paris in the 100 meter dash.
No, they do not run a 50 meter dash at either the USATF Junior Olympics or the AAU Junior Olympics.
Marjorie Jackson was the first Australian woman to win a gold medal in athletics at the Olympics, winning the 100 meter dash and 200 meter dash at the 1952 Summer Games in Helsinki.
Milkha Singh who finished 4th in men's 400 meter dash. He missed winning a bronze medal by .13 of a second.
The 200 meter dash made its debut in the Olympics at the 1900 Games in Paris.
Don Quarrie of Jamaica.
100 meter dash
David Nepomuceno who competed in 100 meter dash and 200 meter dash at the 1924 Summer Games in Paris.
100 meter dash, 200 meter dash, 4x100 meter relay, long jump.
Men: 19.79 seconds by Shawn Crawford of the United States. Women: 22.05 seconds by Veronica Campbell of Jamaica.