Australia's David Pocock

Wallabies David Pocock, Matt Toomua, Matt Giteau and Will Genia have all shaved their heads in support of Christian Lealiifano ahead of their Rugby Championship clash with the All Blacks tomorrow (12.05pm).

The 28-year-old Lealiifano is receiving leukaemia treatment in hospital after he was diagnosed with the cancer earlier this month.

But he will be on the minds of his Wallabies teammates as they kick off the Rugby Championship in Sydney tomorrow (12.05pm).

Toomua is the only one of the quartet who will have to show off his new “hairstyle” off the bench, with coach Michael Cheika selecting an experienced Wallaby squad that includes Adam Ashley-Cooper, Giteau abd Genia  all players currently playing overseas.

All Blacks coach Steve Hansen, meanwhile, has opted for Beauden Barrett at flyhalf instead of Aaron Cruden.

Speaking after his team selection, Hansen says: “The selectors are very happy with the 23 selected for this Test match and we’re looking forward to seeing them play.

“This Test match will be another stepping stone in the re-establishment of this group on the international stage and we know that Australia will throw everything at us, which is what Test rugby is all about.

“With more than 800 Test caps of experience in our match day 23, I'm confident we have the experience to deal with the challenge.”