Whakaotihia te rerenga e whai ake nei: He tangata whenua no Quebec, i whakawhanakehia e Gauthier i roto i ana kaupapa hockey hukapapa iti o te rohe, me te hiahia ki te whai i tetahi mahi koroni nui atu i te QMJHL. Whai muri i tana whiringa e te Océanic i te QMJHL me Youngstown Phantoms i te United States Hockey League, i akiaki ia e Sidney Crosby ki te whai mahi i tana rohe whanau. I a ia e noho ana ki te kapa, i whakataetae a Gauthier mo Team Canada i nga whakataetae o te ao. I riro i a ia he mētara koura i te 2013 IIHF World U18 Championships me
Ko te 2015 World Junior Ice Hockey Championships.