tennis career, including her 39 Grand Slam titles and her defeat of Bobby Riggs in the famous “Battle of the Sexes” match in 1973.King, 77, will also write about her activism on behalf of women in tennis and beyond, and such private struggles as an eating disorder and acknowledging her sexual identity. She was married to Larry King (no relation to the late broadcaster) for more than a decade before being outed in 1981.