Mitchell Starc blitzed the Proteas tail late on day one to give his batting line-up the perfect chance to shine on day two.
But can they make it count?
Follow the action with our live blog.
Spin tandem
Markram is into the attack to buy a wicket before the new ball.
Australia are looking to score a little more off him.
AUS 4-250
Drinks
The break comes at a good time for Rabada.
His last ball was 134km/h, well down from the 150 he can hit.
He has looked tired today whether that’s backing up Tests after his injury or the bit of illness he’s had.
AUS 4-246
Counter attack?
There is eight overs left until the new ball.
Could the Aussies attempt to do some damage before it comes on as the Proteas just try and get to the new pill?
Inglis and Carey are decent players of spin.
AUS 4-239
50 partnership
The Australians have their third 50-plus run partnership of the day as Carey gets a lucky boundary between slip and gully.
But South Africa’s lead is down to 94.
AUS 4-235
Pressure builds
South Africa produced two maidens but Rabada strays onto Carey’s hip and the keeper knocks a single.
The Proteas have an attacking ring field and it nearly saw Inglis get caught cutting in the air.
Just went over the fielder.
AUS 4-233
Rabada back
The big man is into the attack!
His length has been average today but he could still do some damage here.
AUS 4-226
Still ill
Both Kagiso Rabada and Marco Jansen are yet to appear in this session.
Reports are they are ill.
It means Harmer is doing a lot of work and Inglis and Carey will be very pleased about that as they milk singles.
It also means we are actually on track to have 90 overs in a day! Probably. Maybe.
AUS 4-226
Close!
Inglis plays and misses at Harmer with a flashy back-foot drive.
These two are finding it hard work in the middle but need to get themselves in quickly.
AUS 4-207
200
The Aussies are halfway to the total they will be looking for.
They will hope to double this total from here.
AUS 4-200
Illness
Rabada and Jansen are reportedly feeling ill and are off the field.
It could change the game!
Australia need to make sure they don’t lose a wicket early he and then they can cash in when the bowling gets tired.
AUS 4-194
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