Pauline Betz，Many believe Pauline Betz was the finest post-World War II tennis player in the U.S. She grew up in Los Angeles, and became noted for her extreme speed and mobility. During her career, she captured 19 U.S. titles. She first ranked in the U.S. Top Ten in 1939, and became number 1 in 1942. She held the number 1 world ranking in 1946.