 There was virtually no further women's professional tennis until 1967, when promoter George McCall signed Billie Jean King, Ann Jones, Françoise Dürr, and Rosie Casals to join his tour of eight men for two years.The professional women then played as independents as the Open Era began.In 1970, promoter for the Pacific Southwest Championships in Los Angeles Jack Kramer offered the women only $7,500 in prize money versus the men's total of $50,000.