Nyorai kuenderera mberi kweiyi ndima - Harrison akanyorwa neToronto Maple Leafs mumutambo wechitatu, wechi82, we 2001 NHL Entry Draft
. Mushure mekupedza mwaka mina muAmerican Hockey League (AHL) nechikwata chepurazi cheToronto, Harrison akaita NHL yake yekutanga musi waNdira 27, 2006, achipesana neMontreal Canadiens, kwaakanyoresa poindi yake yekutanga yeNHL basa, achiuya muchimiro chekubatsira. Musi waChikumi 16, 2008, Harrison akasaina chibvumirano chegore rimwe chete neEV Zug yeSwitzerland National League A, asi musi waKurume 27, 2009, akadzokera kuToronto Maple Leafs, achisaina chibvumirano, pro-rated pa $ 475,000, kuti atambe iyo yasara ye2008-09 mwaka.