SourcesImage : Billie Jean et Ilana Kloss en 2017 www.gettyimages.fr/detail/photo-d'actualit%C3%A9/american-tennis-players-billie-jean-king-and-karen-photo-dactualit%C3%A9/170402511#american-tennis-players-billie-jean-king-and-karen-hantze-susman-picture-id170402511 www.wtatennis.com/news/women-who-changed-tennis-why-original-9-matter-wta