Dhameystir weedhan soo socota: Intii uu dhamaystiray xirfadiisa ciyaaraha yar ee Horyaalka Koleyga ee Galbeedka (WHL) ee Prince George Cougars, Mason waxaa markii hore loo qoray 122aad guud ahaan
1995 NHL Entry Draft waxaa sameeyay New Jersey Devils. Markii uu bilaabay xirfadiisa xirfadeed iyo in uusan ka saxiixin Devils, Mason wuxuu u saxiixay sidii wakiil bilaash ah Mighty Ducks of Anaheim bishii Juun 27, 1997. Kadib xilli ciyaareedkiisii xirfadeed ee rookie-ka ee kooxda Ducks ee American Hockey League (AHL), Cincinnati Mighty Ducks, iyo habeen ka hor xilli ciyaareedkiisii labaad, Mason waxaa lagu kala iibsaday Anaheim oo ay weheliyaan Marc Moro ilaa Nashville Predators si loogu beddelo Dominic Roussel.