Kammala jumla mai zuwa: Duke ya fara aikin wasan hockey na matasa tare da Lethbridge Hurricanes na Yankin Hockey na Yamma bayan an zaba shi na biyar a cikin WHL Bantam Draft na 2011. An canza shi zuwa Brandon shekaru uku bayan haka, bayan an zaba shi a zagaye na shida na
2014 NHL shigarwa da aka tsara ta Minnesota Wild. A cikin 2016, ya lashe Gasar WHL, Kofin Ed Chynoweth, tare da Wheat Kings.