LONDON, UNITED KINGDOM: American tennis player Billie-Jean King returns a ball against Christine Janes, 27 June 1971, during the Wimbledon championships. King won six times the women’s singles title at Wimbledon, four times the US Open, and once the Roland Garros tournament. Outside the courts, she was the mentor of the movement that succeed in creating the women’s professional circuit, in 1970. (Photo credit should read AFP/AFP/Getty Images)