Here is a look at the life of tennis champion and activist Billie Jean King.
Birth date: November 22, 1943
Birth place: Long Beach, California
Birth name: Billie Jean Moffitt
Father: Willard J. Moffitt, engineer for a fire department
Mother: Betty Moffitt, an Avon sales representative
Marriage: Larry King, attorney - (September 17, 1965-1987, divorced)
Education: Attended Los Angeles State College (now California State University, Los Angeles), 1961-1964.
She has won 39 Grand Slam championships overall in singles, doubles, and mixed doubles, and 12 Grand Slam singles titles.
She is the founder and first president of the Women's Tennis Association (WTA).
As head of the World Team Tennis (WTT) League, she became the first woman commissioner in professional sports.
She threatened to boycott the 1973 U.S. Open if equal prize money was not awarded. The fight she started for equal prize money in the Grand Slams took 34 years to reach fruition when Wimbledon became the last of the four to fall into line in 2007.
She remained friends with "Battle of the Sexes" opponent Bobby Riggs off the court until his death in 1995 of prostate cancer.
1966 - Wins her first Wimbledon singles title.
1966-1968, 1972, 1973, 1975 - Wimbledon singles champion.
1967, 1971-1972, 1974 - U.S. Open singles champion.
1968 - Australian Open singles champion.
1971 - Becomes the first female athlete to win $100,000 in a single year.
1972 - Wins the U.S. Open and threatens to bow out the next year if the women's prize money didn't match the men's.
1973 - The U.S. Open becomes the first major tournament to award equal prize money to men and women.
September 20, 1973 - At 29, plays in the "Battle of the Sexes" match in the Houston Astrodome, against 55 year-old former Wimbledon champion Bobby Riggs. King wins the match in straight sets and the $100,000 winner-takes-all price.
June 30, 1973 - Founds the Women's Tennis Association (WTA).
1973-1975, 1980-1981 - President, Women's Tennis Association (WTA).
1974 - Is a founding partner, along with her husband Larry, of World Team Tennis, a co-ed league. The format of the competition sees men and women playing a five-set competition in a mix of singles, doubles and mixed doubles.
1984 - Retires from professional tennis.
2006 - The United States Tennis Association (USTA) National Tennis Center in New York City, New York, is rededicated as the USTA Billie Jean king National Tennis Center.
February 15, 2014 - King is named as part of the presidential delegation to the closing ceremony of the Winter Olympics in Sochi, Russia. She had initially been a member of the opening ceremony delegation, but had to pull out because her mother was ill.