Billie Jean King - Wikipedia

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. King won the singles title at the inaugural WTA Tour Championships. King 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. For three years, King was the United States' captain in the Federation Cup.
King is an advocate for gender equality and has long been a pioneer for equality and social justice.[2] In 1973, at age 29, she won the "Battle of the Sexes" tennis match against the 55-year-old Bobby Riggs. King was also the founder of the Women's Tennis Association and the Women's Sports Foundation.
Regarded by many in the sport as one of the greatest tennis players of all time,[3][4][5][6] King was inducted into the International Tennis Hall of Fame in 1987. The Fed Cup Award of Excellence was bestowed on King in 2010. In 1972, King was the joint winner, with John Wooden, of the Sports Illustrated Sportsman of the Yearaward and was one of the Time Persons of the Year in 1975. King has also received the Presidential Medal of Freedom and the Sunday Times Sportswoman of the Year lifetime achievement award. King was inducted into the National Women's Hall of Fame in 1990, and in 2006, the USTA National Tennis Center in New York City was renamed the USTA Billie Jean King National Tennis Center.