Carl Mattson was born in Winnipeg, Manitoba on April 13, 1927. Mattson was a strong right-handed pitcher with an outstanding fastball. He was also a good hitter and versatile on the field. Mattson played junior baseball with Norwood in 1945, and with Elmwood in 1946 and 1947. Following this, he played with the ANAF (Army Navy Airforce) Vets in the Mandak league, and senior ball with the Canadian Ukrainian Athletics Club, Selkirk, and St. Boniface. Mattson also played in many tournaments with the Winnipeg Eagles, and coached community club baseball in Norwood and Glenwood.