Carlson captained the basketball and baseball teams while wearing the Brown & Gold, leading the Bruins to championship seasons on the diamond in 1947 and 1948. He went on to pitch at the University of Delaware before signing with the Milwaukee Braves in the summer of 1952.
In 1953, Carlson played for the Evansville Braves in the 3I League, comprised of teams from Indiana, Iowa, and Illinois. He also took the hill for teams in Fort Lewis, Wash., and Quebec City, Canada, during his professional career — one that included an exhibition relief appearance against a Milwaukee Braves lineup boasting Hank Aaron, Warren Spahn, and Eddie Matthews.