Tuhia he tomokanga mo tenei whitianga - I a ia e whakaoti ana i tana mahi rangatahi i te Western Hockey League (WHL) me te Prince George Cougars, i tuhia a Mason i te 122 o te katoa i te 1995 NHL Entry Draft
e ngā New Jersey Devils. I te tiimata i tana umanga ngaio me te kore hainatanga mai i nga rewera, i hainatia a Mason hei kaihoko koreutu na nga Mighty Ducks o Anaheim i te Pipiri 27, 1997. I muri i tana wa ngaio rookie me te hononga o te Ducks 'American Hockey League (AHL), te Cincinnati Mighty Ducks, ana i te ahiahi o tana wa tuarua, i hokona a Mason e Anaheim me Marc Moro ki nga Nashville Predators hei utu mo Dominic Roussel.