Amateur Betz won the
Eastern Clay Court Championships in 1941 and also won the
Eastern Grass Court Championships that same year with a close win in the final against
Sarah Palfrey Cooke. She won the
Dixie International Championships three times (1940–1942). Betz won the first of her four singles titles at the
U.S. Championships in 1942, saving a match point in the semifinals against
Margaret Osborne while trailing 3–5 in the final set. She defeated
Louise Brough in a close final in both 1942 and 1943. In 1943, she won the
Tri-State tournament in Cincinnati, Ohio, defeating
Catherine Wolf in the final without losing a point in the first set, She was included in the year-end top 10 rankings issued by the
United States Lawn Tennis Association from 1939 through 1946. She was the top ranked U.S. player from 1942 through 1944 and in 1946.
Professional Her amateur career ended in 1947 when the
USLTA revoked her amateur status for exploring the possibilities of turning professional. Betz played two professional tours of matches against
Sarah Palfrey Cooke (1947) and
Gussie Moran (1951). Pauline Betz won the Cleveland Women's World Professional Championships in 1953, 1955, and 1956, defeating
Doris Hart, the reigning U.S. champion, in the 1956 final. In May 1956, she also played another match against Hart at Milwaukee, winning in two straight sets. ==Death==