Dewsbury played for the USHL's Omaha Knights in 1945-46, starting in 41 games and scoring six goals and six assists. The following year his time was split between the AHL's Indianapolis Capitals and the NHL's Detroit Red Wings. In 23 games with the Wings, he had two goals and an assist. One of the main reasons he was so attractive to the Wings was his aggressive style of play. In 34 games with Indianapolis, he had 80 minutes in penalties.
After a couple more seasons with the Indianapolis Capitals, Dewsbury drew a permanent assignment with the Chicago Blackhawks where he would remain for six seasons. In three of the first four years, he played in 69 games and saw action in 67 in the other. From an offensive perspective, his best year was 1951-52 when he scored seven goals and 17 assists for 24 points. Dewsbury and the Hawks never were able to make it to the Stanley Cup finals, which were for the most part dominated at that time by the Detroit Red Wings and the Montreal Canadiens.
Dewsbury did win a Cup while playing with the Red Wings during the 1949-50 with teammates such as Gordie Howe and Ted Lindsay spearheading the win, beating down a tough New York Rangers club in a tough seven-game series. The Wings also made it to the Cup finals with Dewsbury on the defense in 1948, but they were swept in four games by the Toronto Maple Leafs.
The 1955-56 season was his final year in the NHL. He played in 37 games with the Hawks, scoring three goals and 12 assists for 15 points. He remained playing professional hockey for another two years with the Hershey Bears of the AHL before retiring. Dewsbury played in 37 NHL games, scoring 30 goals and 78 assists for 108 points.
Courtesy of the Hockey hall of Fame