From my own pick announcement post
1914-15 - C, eastern rules LW (according to Trail)
1915-16 - C
1916-17 - C
1917-18 - C, eastern rules RW/LW
1918-19 - R
1920-21- R
1921-22 - R, part time W. Eastern rules C
1922-23 - MacKay starts the season on D, plays about 8-10 games from there (early Nov-early Jan) before playing wing/RW regularly beside Boucher
1923-24 - W
1924-25 - W
1925-26 - W
1926-27 - Chicago is doing some weird stuff with their roster if you look at the personnel it kinda makes sense (when they get picked we can talk about it) C/W
1927-28 - W/C
Bolded are from seasons he was definitely a winger
5 x PCHA First Team All-Star (1915, 1917, 1919, 1922, 1923)
3 x PCHA Second Team All-Star (1916, 1918, 1921)
WCHL First Team All-Star (1925)
Scoring:
PCHA Points – 2nd(1915), 2nd(1922), 2nd(1923), 3rd(1924), 6th(1917), 9th(1918), 10th(1916), 10th(1919), 10th(1921)
PCHA Goals – 1st(1915), 1st(1924), 2nd(1923), 5th(1922), 6th(1917), 9th(1918), 9th(1921), 10th(1919)
PCHA Assists – 1st(1922), 2nd(1915), 2nd(1923), 3rd(1916), 6th(1924), 8th(1921)
WCHL Points – 2nd(1925)
WCHL Goals – 1st(1925)