The Wallabies are preparing for Wales to target their halves Will Genia and Berrick Barnes as they attempt to level their test series in Melbourne on Saturday night.
The Australians outplayed the Six Nations champions for a 27-19 win in the opening test in Brisbane with No 9 Genia a stand-out in one of his best performances in the gold jumper.
Wallabies coaching co-ordinator Tony McGahan says they're expecting Genia and Barnes to come under far greater pressure at Etihad Stadium.
"I think Wales' first reaction will be to really shut down our key playmakers at nine and 10," McGahan said.
"I think you'll see a renewed focus in that area; you'll see a real blitz defence and they'll be coming off their line exceptionally hard around the ruck and try to control our nine and 10 and make sure their time on the ball and their ability to get themselves in the game will be shortened.