Billie Jean King New York City and Chicago with Kloss, her life partner. 18 finals (12 titles, 6 runner-ups) Singles Billie Jean King Billie Jean King ("née" Moffitt; born November 22, 1943) is an American former World No. 1 professional tennis player. King won 39 Grand Slam titles: 12 in singles, 16 in women's doubles, and 11 in mixed doubles. She won the singles title at the inaugural WTA Tour Championships. She often represented the United States in the Federation Cup and the Wightman Cup. She was a member of the victorious United States team in seven Federation Cups and nine Wightman Cups.
Billie Jean King Betty Moffitt, King's mother, died on February 7, 2014, the day of the 2014 Winter Olympics opening ceremonies. Billie Jean was selected to deliver the Northwestern University commencement address on June 16, 2017 in Evanston, Illinois. She attended the 75th Golden Globe Awards in 2018 as a guest of Emma Stone. King and her partner Ilana Kloss became minority owners of the Los Angeles Dodgers baseball team in September 2018. Margaret Court, who won more Grand Slam titles than anyone, has said that King was "the greatest competitor I've ever known". Chris Evert, winner of 18 Grand Slam singles titles,