Born to Felix and Anna Lauciniunas, Dubzinski graduated from Gardner High School in 1937, where he played football and was a co-captain.
He went on to attend Boston College and played football as a fullback, linebacker, and center there under Gil Dobie and Frank Leahy from 1938 to 1940.
[1] Dubzinski was the starting center in the 1940 season, when the team went undefeated with an 11–0 record and defeated the Tennessee Volunteers in the 1941 Sugar Bowl.
After graduating from Boston College with a Bachelor of Science in education in 1941, Dubzinski went on to play professional football in local independent leagues for the Golden Bears of Pittsfield and Holyoke, respectively.
This time, he was hired as the head coach of his alma mater, Gardner High, where he stayed on for twenty seasons and compiled a 130-41-6 record.