Smith turned pro in 1949 and joined the Spalding staff. She was one of the thirteen women who founded the LPGA in 1950. She won her first tournament in 1952 at the Fort Wayne Open. She would go on to win a total of 21 events on the LPGA Tour, including two major championships, the 1963 and 1964 Titleholders Championships. She finished in the top ten on the money list nine times between 1961 and 1972, with her best finishes being fourth places in 1963, 1968 and 1970. She was named the LPGA Most Improved Player in 1963. She was the LPGA's president from 1958 to 1960. She was selected for membership of the World Golf Hall of Fame in the Lifetime Achievement category in June 2006 and was inducted in October 2006.