A member of the Minnesota Section PGA for more than 40 years, Cook holds numerous championship titles. He qualified for ten PGA Championships and eight PGA Professional Championships. In 1960, Cook won the Minnesota State Open, followed by the Minnesota PGA Stroke Play Championship in 1961 and 1962. He won that tournament two more times in the 1970s, as well as two Minnesota PGA Match Play Championship titles, four Minnesota Senior Stroke Play titles, the Tapemark Charity Pro-Am in 1971 and the Minnesota Senior Open in 1987.
