At one point, she played quarterback on a local team that included future Oklahoma Sooners head football coach Bud Wilkinson.

At the age of 13, Berg took up golf in 1931 at the suggestion of her parents; by 1934, she began her amateur career and won the Minneapolis City Championship.

With a victory in the 1938 Titleholders Championship and a spot on the winning Curtis Cup team as well, Berg was selected as the Associated Press Woman Athlete of the Year, the first of three times she earned the honor.

[8][3] Despite concerns that her golfing career would end, Berg returned to the game in 1943, helped by a locker room fall that broke adhesions which had developed in her leg.

In 1948, she helped establish the forerunner of the LPGA, the Women's Professional Golf Association (WPGA), winning three tournaments that season and in 1949.

[7] When the LPGA was officially started in 1950, Berg was one of the 13 founding members and held a leadership position as the association's first president.

During a four-year stretch from 1953 to 1956, Berg won the Vare Trophy three times for having the lowest scoring average on the LPGA.

Berg received the 1986 Old Tom Morris Award from the Golf Course Superintendents Association of America, GCSAA's highest honor.

Berg represented another of Jemsek's public facilities, St. Andrews Golf & Country Club in West Chicago, Illinois, on the women's circuit for over 60 years.