Classic spinner's pensive pose from Simon Harmer to one defended by Cooper Connolly.

Legs more than shoulder width apart while stroking his chin.

South Africa pushing hard for these last two Australia wickets.

Mitchell Starc offered a bit of width by Simon Harmer and the the Aussie uses the depth of his crease well to thread it behind point for four.

Australia's lead now up to 72 runs.

South Africa's fielders working vigorously on the ball - in a fully legitimate fashion, of course...

Both Cooper Connolly and Mitchell Starc playing cautiously against Simon Hamer as they aim to eke out a few singles.

Gerald Coetzee continues to carry a bit of threat and his decision to switch to over the wicket, and slant it across Connolly, draws the left-hander into a fresh-air waft.

Simon Harmer rattles through another over before Gerald Coetzee, sporting his trademark headband, replaces Kagiso Rabada.

A loosener to start from Coetzee is biffed away by Cooper Connolly before Temba Bavuma puts his head in his hands a couple of balls later.

Mitchell Starc edges a delivery from round the wicket by Coetzee which straightens a fraction and the ball flies to third slip.

Except South Africa not not have a third slip in place. Four more to the Australian total.

All of a sudden from what looked to be comfortable batting conditions the ball has started talking off the pitch.

Kagiso Rabada gets one to jag sharply off the deck to new batter Mitchell Starc who is absolutely flummoxed as he is beaten through the gate.

There's a cigarette paper between the ball and leg stump.

Pat Cummins is struck on the pad by Kagiso Rabada.

Umpire Richard Illingworth gives it out on field, but the Australia captain opts for the review.

Cummins has perhaps done so more in hope than expectation.

The fall of the wicket prompts the umpires to call drinks on to the field.

It initially looked like it was going be Australia's first hour, but South Africa have come roaring back into things.

Australia's lead is 50 runs.

The crowd at Newlands think there's a catching chance offered by Alex Carey off Kagiso Rabada after the ball whistles through the slips.

However, Carey had actually played it pretty well with soft hands and the ball had already bounced into the turf long before even it got to the cordon.

Cooper Connolly is the new batter is given a stern examination by Rabada outside off stump as he beaten on a couple of occasions.

This is Josh Inglis' second Test century. His first came on his debut against Sri Lanka in Galle when he made 102 in a comprehensive win for Australia.

Century for Inglispublished at 98.1 overs

98.1 overs

Image source, Getty Images

Simon Harmer's first delivery is reverse swept hard by Josh Inglis and that takes him to three figures off 132 balls.

Inglis punches the air in celebration and roars before peeling off his helmet and saluting the crowd at Newlands.

Aus 362-4published at 98 overs

98 overs

Worse still for South Africa and Simon Harmer, the ball raced away for four.

Harmer requires some treatment from the medical staff, which is handy as the spinner is immediately called upon to bowl.

Carey dropped on 65published at 98 overs

98 overs

A buzz and chatter from the crowd as Kagiso Rabada is tossed the ball by Proteas skipper Temba Bavuma.

The quick bowler creates the first chance of the day with the final delivery of the over, bowling round the wicket to Alex Carey.

Carey attempts to drive on the up again but sends a edge to the solitary slip - Simon Harmer - standing at a wide-ish second.

It's a tough chance for Harmer with the ball dying on him and he ends up trying to get his left hand underneath it but cannot quite cling on.

Shaun Pollock
Ex-South Africa captain on Sky Sports

Image source, Getty Images

For me, this should be Australia's top six with Steve Smith coming in for Labuschagne.

Marco Jansen puts the ball up in the business end but Alex Carey trusts the pitch sufficiently to drive on the up, and strokes the South African left-arm quick through the covers for four.

Later in the over Jansen releases a wild full toss which flies high down leg side and has wicketkeeper Ryan Rickleton scrambling to stop it.

He gets a sympathetic tap on the back from the umpire after it's called a no ball. That one just slipped out.