To mark the release of Battle of the Sexes, the new Fox Searchlight film about the legendary tennis match between Billie Jean King and Bobby Riggs, parent company 21st Century Fox will donate a portion of ticket sales to the Women’s Sports Foundation, founded by King to empower female athletes. For every ticket sold on opening weekend, the company will donate 79 cents to WSF, representing the 79 cents that women in the United States earn on average for every dollar paid to men. The donation reflects both organizations’ commitments to both ensuring equality in the workplace, and continuing to expand opportunities for women in sports of all ages.