Springboks' winning streak at risk in Brisbane
Australia has won its past seven Brisbane matches against South Africa by an average of 20 points, including a 21-9 victory in 2009, which was the Wallabies' only Tri-Nations win that season and champion South Africa's only loss.
Australia has only one win in five tests this year, including two losses in a row to New Zealand to start the Rugby Championship.
South Africa has beaten Argentina twice and has the early lead in this year's tournament.
Halfback Ruan Pienaar, whose 68 tests include that 2009 loss, says he can't explain the reason for South Africa's poor record in Brisbane.
Or that on Australia's east coast for that matter; South Africa has also lost all six matches played in Sydney since the code went professional in 1996.
"I don't think you can put your finger on that," Pienaar said.
"For us, we take a lot of pride in playing back home and it's the same for Australia – they want to put in a big performance before their home crowd."
Pienaar said a victory on Saturday would be a big confidence-booster for the Springboks in their second season under coach Heyneke Meyer.
"I know the record isn't great but that's the exciting thing now for this group now," he said.
"If you want to grow as a group and go forward you would like to get a result here. We are a fairly young squad ... so this would be a massive step in the right direction."
South Africa's record at home against the Wallabies is near-perfect – the team has lost only once to Australia.
The Wallabies broke a 47-year drought with Kurtley Beale's late penalty goal at Bloemfontein in September 2010 giving the visitors a 41-39 win.
"At home on the highveld, it is more of a continuity game and you get that continuity," Meyer said.
"Away from home it is more of a contesting game where you get the teams contesting every single lineout, so we have to be disciplined."
Ruled out of the match
South Africa's chances improved with news on Thursday that Australia captain James Horwill has been ruled out of the match.
The Australian Rugby Union said Horwill strained a hamstring in a training run on Tuesday.
Kane Douglas will replace him in the second row and scrumhalf Will Genia will take over the captaincy. – Sapa-AP