Lady Byng Memorial Trophy
In the NHL, Mosienko won the Lady Byng Memorial Trophy in 1945 as the most gentlemanly player in the league, played in five All-Star Games and was twice named to the second All-Star Team. He left the league in 1955 to help bring professional hockey to his hometown of Winnipeg. He helped create the Winnipeg Warriors of the Western Hockey League and was a three-time All-Star in his four years of play in the league. He won the league championship in 1956.