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.
2009 Billie Jean King Cup 2009 Billie Jean King Cup March 2, 2009, marked the inaugural year of the Billie Jean King Cup and the first time women's tennis had been played at Madison Square Garden since 2000, when the year-ending Chase Championships were held there. Broadcast internationally on HBO, the event featured 2008 US Open Champion Serena Williams, 2008 Wimbledon Champion Venus Williams, 2008 French Open Champion Ana Ivanovic and 2008 year end world No. 1 ranked player Jelena Janković, who filled in as a wild card for the injured 2008 Australian Open Champion Maria Sharapova. Serena Williams won her semifinal match against Ana