Australia should work hard. If they lose the next match too, then the disappointment of the whitewash is a great shame for Australia. South Africa strength is going very well and if they continue to play in the same way they will be successful.
It's huge shame for Aussies as it's second consecutive ODI series defeat back at thier home ground, but I think few of thier game winning pacer wasn't part of team that's why they struggle to restrict thier opponent on low target and that's why they collapse after following such huge target at pressure mounting situation. Morever after warner retirement things got a bit difficult for them to manage especially at opening order which really have vital impact on match results. Now many of us except a white wash but I think for a sake of Aussies dignity they will make it impossible for proteas.