Timeline of women's sports in the United States Alberga was the first woman to play a full season in a professional men's baseball league. 1949 - Sara Christian became the first female NASCAR driver, racing in the inaugural NASCAR race at Charlotte Speedway, even though she had Bob Flock finish the race. In the second official race at Daytona Beach and Road Course, also in 1949, Christian was joined by Ethel Mobley and Louise Smith, with Mobley finishing ahead of the 3, at 11th. 1950 - Kathryn Johnston, only twelve years old, was the first girl to play Little League Baseball. She played for the King's Dairy team
National Tennis League National Tennis League National Tennis Leagues (NTL) was a tour for professional male tennis players established in 1967 by George MacCall. In 1970 it was sold to the World Championship Tennis (WCT), a competing professional tennis league run by Lamar Hunt. The National Tennis League (NTL) was formed by former U.S. Davis Cup captain George MacCall in 1967, as a governing body to a US Professional tennis tour. It was key in moving tennis from a mostly amateur sport to a professional sport. In 1968 Billie Jean King became the first woman of the Open Era to sign a pro