Wales will field the most experienced active centre pairing in world rugby this weekend, and Australia will oppose them with two men who've never started together.
But Wallabies centre Tevita Kuridrani believes he and rookie Reece Hodge have developed enough understanding on the training pitch to contain Jamie Roberts and Jonathan Davies, who play their 49th Test together at Millennium Stadium.
"We've been working really hard this week, just getting our defence right, communication with the midfield," Kuridrani said.
"It's the first time for us to play in the midfield together and excited for the challenge and everything's going well.
"I think Reece is a good defender as well and it's been automatic, we've clicked really well in the defence so it's pretty good.