Won nine Grand Slam singles titles in four seasons — the US Championships in 1951, 1952 and 1953, Wimbledon in 1952, 1953 and 1954, the French Championships in 1953 and 1954 and the Australian Championships in 1953 — and in 1953 became the first woman to win all four in one year. She never turned professional and was ranked world No. 1 from 1952 to 1954. A horse-riding accident ended her career at 19; she then founded a junior tennis foundation in Texas and coached the British Wightman Cup team.