Born in Perth, Ontario, Douglas played junior with the local Crescents and Blue Devils. In 1938-39 he led the MOHL with 27 goals in as many games for the Detroit Pontiacs. After playing the next year with the Indianapolis Capitals of the AHL, he spent the next four years shuttling between the Red Wings and the minors. His best year was 1942-43 when he recorded 13 points in 21 games as an injury fill-in.

After spending a year in the military, Douglas returned to score 44 goals and an AHL-best 90 points for Indianapolis. He also toiled for the Buffalo Bisons and Cleveland Barons and was placed on the league's first all-star team twice. After scoring 100 points for the Barons in 1949-50, he won the Les Cunningham Award as the AHL's most valuable player. Douglas also went on to excel in the Quebec Senior league and won the Vimy trophy as MVP after scoring 80 points in 60 games for the Montreal Royals in 1951-52. He retired in 1956 after spending a year with the senior Kingston Goodyears.

Courtesy of the Hockey Hall of Fame