 The USLTA initially would not sanction the tour; however, the two groups determined to give Virginia Slims the individual events, and the USLTA the tour, thus resolving the conflict.In 1973, the U.S. Open made history by offering equal prize money to men and women.Billie Jean King, the most visible advocate for the women's cause, earned over $100,000 in 1971 and 1972.