 Hart akazotevera kusarudzwa kuti amiririre Canada pa2017 World Junior Ice Hockey Championships. Akaunzwa semubati wepagedhi anotanga, akaiswa parutivi mushure mekubvumidza zvibodzwa zvitatu mumashiripiti gumi nemanomwe neRussia uye akadaidzwa zvakare chete apo Connor Ingram akapa zvibodzwa zviviri mumashiripiti matatu neSweden. Pashure pokuita kuponesa 31 mumutambo wemenduru yegoridhe neUnited States, Hart akarega chinangwa chokurova naTroy Terry kuti ape Canada menduru yesirivha. Akasarudzwa zvakare, naMichael DiPietro panguva ino, ye2018 World Junior Ice Hockey Championships. Mushure mokurekodha 23-kuponesa shutout kurwisana neCzech Republic mumutambo wepamberi pemutambo, Hart akatumidzwa zita reCanada. Canada yakakunda Sweden mumutambo wemenduru yegoridhe, uye Hart akapedza mutambo ne 501 rekodhi, achibatanidza rekodhi yeCanada yepasi rose yejunior basa pa 802. 