Australian runner who won 4 Olympic gold medals, three of them in Melbourne in 1956 and one in Tokyo in 1964.
She was only 18 when she entered the 1956 Summer Olympics.
She set a World Record in the 200 meter event at the 1956 Olympics.
She was born alongside a twin sister named Marie in Sydney, Australia.
She took home gold at the 1964 Olympic games, where boxer Joe Frazier also won a gold medal.