Wallabies coach Michael Cheika is keeping the All Blacks guessing, delaying his team naming until the eve of Saturday's Bledisloe Cup finale in Auckland.
Cheika is weighing up the pros and cons of thrusting rookie locks Rory Arnold and Adam Coleman into the Eden Park cauldron or recall the reliable second-row pairing of Kane Douglas and chief lineout caller Rob Simmons.
Anything but a "dead rubber", Australia must stop the All Blacks juggernaut to avoid becoming the first Wallabies outfit in 117 years of international rugby to be whitewashed 3-0 by two nations in the same season.
Cheika has shuffled his second row all year, mixing and matching Coleman and Arnold with Simmons, Douglas, Sam Carter and Will Skelton.
Cheika worked Douglas and Simmons in tandem at Thursday's training session in Sydney, alternating the experienced duo with first-year internationals Coleman and Arnold.