Summer marks the 50th anniversary of the WTA - the Women's Tennis Association. Billie Jean King, along with Rosie Casals and many others, led the way in forming an organisation to give women equal rights in tennis. They've helped pave the way for the many great players who have graced the women's game since - Martina Hingis, Martina Navratilova, Steffi Graff, Venus Williams, Serena Williams, Naomi Osaka, Iga Swiatek and many, many more have won Grand Slam titles since the formation of the WTA in 1973. In a special Sportsworld podcast, Delyth Lloyd celebrates a milestone moment for women’s tennis. Photo: Ann Kiyomura-Hayashi, Penelope Moor, Pam Whytcross, Helen Gourlay, Rosie Casals, Ingrid Löfdahl Bentzer, Betty Stöve, Billie Jean King, Françoise Dürr, Christina Sandberg, Ilana Kloss, Trish Bostrom and Sue Lightbody pose, as the WTA celebrates their 50th with iconic founder Billie Jean King and several founding members on June 30, 2023 in London, England. (Credit: Getty Images)