Internationally he played for the Canadian national team at the 1939 World Championships, winning a gold medal.

He became a dominant player in his hometown Winnipeg Monarchs where he won the MJHL and then the 1937 Memorial Cup where he scored four goals in the championship game.

He became a star player for each team and won the Allan Cup with Trail and Kirkland Lake.

After his cup win, McCreedy served in World War II for the Royal Canadian Air Force.

McCreedy settled in Sudbury, Ontario where he went on to pursue a career at INCO and was eventually promoted to vice-chairman.