Ngalengkepan kalimah di handap ieu: Bari completing karir junior di Western Hockey League (WHL) jeung Pangeran George Cougars, Mason asalna drafted 122nd sakabéh di
1995 NHL Entry Draft ku New Jersey Devils. Mimitian karir profésionalna sarta henteu ditandatanganan ku Devils, Mason ditandatanganan salaku agén bébas ku Mighty Ducks of Anaheim dina 27 Juni 1997. Sanggeus usum rookie profésional jeung Ducks 'American Hockey League (AHL) affiliate, nu Cincinnati Mighty Ducks, jeung dina wengi usum sophomore-Na, Mason ieu traded ku Anaheim babarengan jeung Marc Moro ka Nashville Predators di tukeran pikeun Dominic Roussel.