In 1973, Billie-Jean King made tennis history by winning a challenge match against a former Wimbledon champion called Bobby Riggs. The "Battle of the Sexes" was watched by a global TV audience of nearly 100 million and is credited with improving the credibility of the women's game. The story has now been turned into a Hollywood movie. Billie-Jean King talks to David Sillito.



PHOTO: Billie-Jean King and Bobby Riggs leaving the court (Getty Images)