Kammala jumla mai zuwa: A lokacin kakar wasa ta uku ta OHL, an kira Horvat zuwa tawagar 'yan kasa da shekaru 20 na Kanada don
Gasar Zakarun Duniya ta 2014 a Malmö, Sweden. Bayan ya fara gasar a matsayin mai kai hari, yana tsakiyar layi tare da Connor McDavid da Sam Reinhart, ya gama a layin Kanada kuma ya sami yabo daga babban kocin Brent Sutter don wasan tsaron sa. A wasanni bakwai, ya yi rikodin kwallo guda da maki uku yayin da Kanada ta kasance ta huɗu.