Pedzisa mutsara unotevera: Musi waJune 28, 2013, Gauthier akakokwa kumusasa wokuvandudza wezhizha weCanada National Junior Team. Pashure pokuita rondedzero, akanga ari mutezo wechikwata cheCanada chakanga chawana menduru yegoridhe pa
2013 IIHF World U18 Championships. Gore rakatevera, akakokwa zvakare kumusasa wekuvandudza wezhizha weCanada National Junior Team pamberi pe2014 World Junior Ice Hockey Championships. Pashure pokuita roster yokupedzisira, Team Canada akarasikirwa vari semi-fainari kuna Finland uye akakundikana menduru kuzorwa Russia. Achiri kutamba mumitambo mitanhatu, Gauthier akarekodha rubatsiro rumwe uye akapedza ne -2 Plus<unk>minus.