Retallick relishing second row test

All Blacks lock Brodie Retallick is relishing the opportunity to face off with his Wallabies counterparts in Sydney on Saturday.

With Rob Simmons, Will Skelton, Kane Douglas, Dean Mumm, Adam Coleman and Lopeti Tomane all in Australia's squad, Retallick admitted that it is difficult to predict who will start for the Wallabies from the aforementioned players but still expects a tough battle.

"I'm not sure who they're going to use until we see the team," he told Fairfax Media.

"But obviously they've got Will there who's a big powerful ball runner and the other guys are great in the lineout and mobile around the field. 

"Obviously they're going to want to use their lineout forwards, I'm guessing, so they can get their set plays going out on the field."

Retallick and Sam Whitelock have formed a formidable second row combination for the world champions since first playing together at Test level in 2012 and are expected to be New Zealand's starting locks again this weekend.

"It helps to work with each other and know what each other needs to get the best out of each other and also around the field," the 25-year-old said of his partnership with Whitelock.

"You can start to pick where they're going to go or what they're going to do. So yeah it helps. It helps especially at lineout time and especially defensively and you start to build a combination there and get people up in the air and disrupt some ball.

"As far as I see it it helps. It helps us anyway."