Ku dhameystir weedha soo socota: Horyaalka cusub ee NHL, McDonald waxaa soo xulay Montreal Wanderers. McDonald wuxuu ka mid ahaa 12 ciyaartoy oo xubno ka ahaa kooxda Wanderers ee 1917/18. Garoonka ciyaaraha ee Wanderers ayaa waxaa ku gubtay dab kaliya 6 kulan oo ka mid ah 22 ciyaarood ee jadwalka ciyaaraha. Dhacdadani waxay ku qasabtay horyaalka inuu kala diro ciyaartoyda Wanderers iyada oo loo marayo qorista 1 ka mid ah 3da koox ee hartay (Toronto, Montreal Canadiens iyo Ottawa Senators) ee National Hockey League. McDonald waxaa soo xulay Montreal Canadiens oo uu u ciyaaray ilaa 1919, oo ay ku jiraan kooxda nasiib darada ah
1919 Stanley Cup Finals oo la baajiyay ka dib shan ciyaarood (2-2 oo isku xigta, hal ciyaar oo isku xigta) sababo la xiriira cudurka faafa ee hargabka Isbaanishka. McDonald waxa uu ka mid ahaa ciyaartoydii Canadiens ee uu ku dhacay hargab markii ciyaarta la joojiyay. Kooxdiisa Joe Hall ayaa u dhintay cudurka.