It would be almost impossible to overstate Billie Jean King's significance to women's tennis. From 1966 through 1975, King won 32 of her career 39 Grand Slam titles, including all 12 of her Grand Slam singles titles, 9 of her 16 Grand Slam women's doubles titles, and 10 of her 11 Grand Slam mixed doubles titles.Six of King's Grand Slam singles titles were at Wimbledon, four were at the U.S. Championships/Open, one was at the French Open, and one was at the Australian Championships. King reached the final of a Grand Slam singles tournament in 16 out of 25 attempts and had a 124 win-loss record in those finals. In the nine tournaments that she failed to reach the final, she was a losing semifinalist twice and a losing quarterfinalist five times.

Billie Jean King