A game Matildas coach Tony Gustavsson intended to treat as a World Cup final dress rehearsal instead proved a reality check, with the United States handing Australia a 3-0 defeat in Sydney.
A record home Matildas crowd of 36,109 fans packed Accor Stadium but they were silenced after just 24 seconds when Ashley Hatch pounced on a series of defensive lapses to snatch the lead.
Rose Lavelle doubled the lead in the 49th minute, with skipper Lindsey Horan adding a third from the penalty spot in the 68th.