The Wallabies have copped yet another blow ahead of their Rugby Championship Test against South Africa on Saturday night with Adam Coleman joining Israel Folau as a late withdrawal.

Second-row enforcer Coleman will miss the clash due to family reasons, according to a team spokesman.

He will be replaced in the starting line-up by Izack Rodda, whose original place on the bench will now be filled by Rob Simmons.

Folau, meanwhile, has failed to recover from an ankle injury he suffered against the All Blacks in Sydney two weeks ago.

Dane Haylett-Petty moves to fullback to cover for his loss, with Jack Maddocks coming onto the wing and Tom Banks making his way into the squad.

It comes after loose forward David Pocock was also scratched from the team on Friday after failing a fitness test on his injured neck.