Kammala jumla mai zuwa: Aikin Wallin ya fara ne a Bodens IK, kungiyar garinsu. Bayan samun ci gaba a cikin kakar 1995-96, ƙungiyar Elitserien ta Sweden Brynäs ta karbe shi. Bayan ya kwashe wasu shekaru tare da Brynäs, Wallin an zaba shi a zagaye na huɗu, na 97 na gaba ɗaya ta hanyar Hurricanes a
2000 NHL Entry Draft kuma ya kasance a cikin tawagar har zuwa Fabrairu 2010. A lokacin kulle-kullen NHL na 2004/05, Wallin ya koma Sweden, inda ya buga wasanni 39 don Luleå. A shekara ta 2006, ya lashe kofin Stanley na farko tare da Carolina Hurricanes.