Ku dhameystir weedha soo socota: Harrison waxaa soo qaatay kooxda Toronto Maple Leafs wareega saddexaad, oo ah kii 82aad ee guud ahaan,
Sanadkii 2001 kii ayaa la soo doortay. Ka dib markii uu afar xilli ciyaareed ku qaatay Horyaalka Koleyga Mareykanka (AHL) kooxda beeraha ee Toronto, Harrison wuxuu sameeyay kulankiisii ugu horreeyay ee NHL bishii Janaayo 27, 2006, oo ka dhan ah Montreal Canadiens, kaas oo uu ku diiwaan geliyey dhibcihiisa ugu horreeyay ee xirfadiisa NHL, isagoo ku yimid qaab caawin ah. Bishii Juun 16, 2008, Harrison wuxuu heshiis hal sano ah la saxiixday kooxda EV Zug ee horyaalka qaranka Switzerland A, laakiin bishii Maarso 27, 2009, wuxuu ku soo laabtay Toronto Maple Leafs, isagoo saxiixay heshiis, oo lagu qiimeeyay $ 475,000, si uu u ciyaaro inta ka hartay xilli ciyaareedkii 2008-09.