Rubuta ci gaba don wannan sakin layi - Auld ya fara aikin matasa tare da Arewacin Bay Centennials na Ontario Hockey League (OHL) a ƙarshen ƙarshen kakar wasa ta 1997-98, yana bayyana a wasanni shida ba tare da yin rajistar nasara ba. Bayan ya bayyana a wasanni 38 a kakar wasa ta gaba, Florida Panthers ta zabi Auld a zagaye na biyu, 40th gaba daya, na NHL Entry Draft na 1999. Zai gama aikinsa na matasa tare da Centennials, yana ciyar da wasu lokutan biyu a matsayin mai tsaron gida. A lokacinsa na ƙarshe, an kira Auld zuwa Team Canada don Gasar Hockey ta Duniya ta Junior ta 2001
, inda ya goyi bayan Maxime Ouellet. Daga baya a wannan kakar, an yi musayar Auld zuwa Vancouver Canucks don zaɓar zagaye na uku a cikin NHL Entry Draft na 2002 da kuma zaɓin diyya a cikin NHL Entry Draft na 2001.