![Billie Jean King](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw200%2F%2Fiim56BMfTZxeifP4Y5HiAdyhFit.jpg&w=3840&q=75)
Tennis star and women’s rights activist Billie Jean King won a total of 12 Grand Slam titles, but the biggest match of her career took place in 1973 against former men’s champion Bobby Riggs, a self-proclaimed male chauvinist pig who declared that, even at the age of 55, he could beat any woman in the world.