A marvelous skater and goal scorer, Duncan "Mickey" MacKay was blessed with instinct and timing on the ice that was matched by few contemporaries. A star rover and center in a number of leagues during his career, he was particularly successful in the Pacific Coast Hockey Association, where his offensive heroics made him one of the Vancouver Millionaires' most popular stars.
In 1914 McKay was signed by the Vancouver Millionaires of the PCHA and he quickly embarked on the most fruitful period of his hockey career. MacKay dazzled the West Coast fans with a three-goal effort in his first league game on December 8, 1914, playing on a line with Frank Nighbor and Ken Mallen. His 33 goals in 17 games as a rookie exceeded all other rivals. During the Stanley Cup victory over Ottawa, MacKay continued to impress with four goals in the three-game series that his team dominated.
The scoring exploits of MacKay didn't abate during the coming years. He was sensational during Vancouver's heartbreaking loss to the Toronto Arenas in the 1918 Stanley Cup series, scoring five goals in as many games playing as a rover and right wing.
"The Wee Scot" spent the 1919-20 schedule with the Calgary Columbus of the Alberta Big 4 Hockey League before returning to Vancouver the next year. He topped the PCHA in goals scored during its last year of operation in 1923-24. That same year his Vancouver squad lost to the Montreal Canadiens in the last Stanley Cup championship series involving a PCHA team.
The Vancouver franchise joined the Western Canada Hockey League in 1924-25 and MacKay led the way on the strength of a league high of 27 goals in 28 games. The loop was renamed the Western Hockey League prior to the 1925-26 schedule. When the league folded a few months later, MacKay was among the stars coveted and purchased by NHL teams. Consequently he joined the Chicago Black Hawks for their inaugural season in 1926-27. MacKay spent two years in the Windy City recording 31 goals playing on a line with Dick Irvin.
Acquired by the Pittsburgh Pirates in the off-season, MacKay was traded again, this time to the Boston Bruins, on December 21,1928. He scored nine goals while helping the Bruins finish at the top of the American Division standings. In the Stanley Cup finals, MacKay helped the Beantowners quell the New York Rangers in two straight games and got his name on the Cup for the second time in his career. He retired as a player partway through the next season to assume the task of business manager with the Bruins.
MacKay scored 260 regular-season and playoff goals in three top-flight leagues between 1914 and 1929. He was inducted into the British Columbia Sports Hall of Fame and earned a place in the Hockey Hall of Fame in 1952.