MacKay started his professional career by playing five games for the
Detroit Red Wings in
1947. The next season, he split his time between the
Omaha Knights of the
United States Hockey League and the
Indianapolis Capitals of the
American Hockey League. In
1949, He was called up to Detroit for one game before being sent back to Indianapolis. In
1950, he joined the
Montreal Canadiens where he played three years before being sent to the
Buffalo Bisons for most of 1952 and all of 1953. He re-joined the
Montreal Canadiens for the
1953 playoffs where he helped the Canadiens win the
Stanley Cup defeating the
Boston Bruins in the
1953 Stanley Cup Finals. He played two more seasons for the Canadiens before he suffered a knee injury during training camp on September 30, 1955. ==Career statistics==