If Australia are making South Africa work for every wicket, the same can be true in the runs column. A superb diving stop in the covers prevents four and puts Josh Hazlewood on strike for the next over.

Simon Harmer now has five wickets in this innings and nine for the match. It should be tea but they'll play an extra half hour now Australia are nine down.

"Everybody wants to rule the world" is belted out over the PA system. Only one team rules the Test world.

Pat Cummins looks like he's gone here.

The draw is up to 1% now, which is a victory of sorts for Australia given it wasn't significant enough to register on the win predictor about an hour ago. Nathan Lyon is looking increasingly comfortable as he drives a couple into the off side.

"South Africa have outplayed Australia in this series and I have seen with my own eyes why they are the deserved World Test champions," says Simon Katich on television. It's hard to disagree. They've been excellent, though the ice is melting in their champagne bucket the longer this partnership digs in.

Ok, Australia. We get it. You have shown fight but let's crack on now... those 3pm kick-offs are getting closer. Maiden.

If you're watching this on the tele, just look at the energy which goes through Simon Harmer's shoulder when he releases the ball. He's giving it every chance to spin if it finds a footmark. Nathan Lyon gloves one for four to bring up the Australian 100.

Aiden Markram slides one past Pat Cummins' outside edge. The Australian captain nods in approval. Game respects game.

Hands on heads in the South Africa slip cordon as Nathan Lyon scoops four over the four waiting catchers. Australia are playing a few extra shots now. I reckon Lyon doesn't back his defence as much as Cummins.

With the clouds rolling in, I just checked the forecast. Rain won't be saving Australia. This is Cape Town, not Old Trafford.

Pat Cummins, with flashes of fluorescent yellow on his upturned collars, shovels a loosener from the returning Aiden Markram behind square for four as the clouds roll in from above Table Mountain.

Shot of the day! Nathan Lyon stands tall and punches four through the covers off Kagiso Rabada. He swivels on a short ball to turn two round the corner, then hits another two into the large gaps in the off side.

Pat Cummins is showing unbelievable restraint - he's scored just five off 65 balls. Maiden over.

My colleague, Matthew Henry, reckons he'd rather see Australia play some shots because they're not going to bat out for a draw. They probably won't, but there's more chance of that than them winning? And at least it shows they have some resolve?

In the middle, Lyon gets a streaky four through the slips. The rest of the over is a succession of plays and misses. Rabada is too good and Lyon suggests as much with an embarrassed smirk.

Simon Harmer has figures of 4-9 from his 17 overs. Australia's tail is holding him and South Africa up here though.