An inexperienced Roar impressed in their 2-0 win over reigning A-League champions Sydney FC on Wednesday night.
The concluding Round of 32 saw last season's top-three A-League sides all eliminated as Perth Glory fell to Western Sydney Wanderers, and Melbourne Victory were toppled by Newcastle Jets.
Wellington Phoenix crashed out against semi-professional opponents as Brisbane Strikers triumphed on penalties, leaving just six A-League clubs in the competition.