 Ramba uchinyora ndima iyi - Crosby akaenderera mberi achikwikwidza mumakwikwi maviri eWorld Junior Championships nechikwata cheCanada chevadiki pasi pemakore makumi maviri. Paakadanwa kuchikwata muna Zvita 2003, akazova wechishanu ane makore gumi nematanhatu anomiririra Canada mumutambo, achitevera Jay Bouwmeester, Jason Spezza, Eric Lindros naWayne Gretzky. Achikwikwidza mu2004 World Junior Championships muHelsinki, akazova mutambi wechidiki kukunda zvibodzwa munhoroondo yemutambo uyu pazera remakore gumi nematanhatu, mwedzi mina nemazuva makumi maviri nerimwe paakarova zvibodzwa kuSwitzerland mukukunda 7-2. Nhoroondo iyi yaizogara kusvika ku2012 World Juniorsapo Aleksander Barkov wokuFinland akarova zvibodzwa aine makore 16 nemwedzi 4. Crosby akapedza mutambo wacho aine zvibodzwa zviviri uye matatu anobatsira mumitambo mitanhatu, achibatsira Canada kupedzisa menduru yesirivheri. Gore rakatevera, akadzokera kuCanada ku2005 World Junior Championships muGrand Forks, North Dakota. Akavandudza kusvika kuzvinangwa zvitanhatu uye zvinobatsira zvitatu sezvo Canada yakawana ndarama. Crosby akataura gore rakatevera kuti nguva yake isingakanganwiki yeHockey yaive kuhwina menduru yake yegoridhe yeWorld Junior. 