SA 119-6published at 31 overs
Gerald Coetzee survives the hat-trick ball.
What on earth has just happened?
Australia book World Cup final date against hosts India
Cummins and Starc see Australia to three-wicket victory
Regular wickets keep SA in contention on spinning wicket
Head (62) and Smith (30) top-score for Australia
South Africa bowled out for 212
Miller hits 115-ball century, bringing up hundred with a six
Klaasen (47) & Miller put on 95 for fifth wicket
South Africa slump to 24-4 under grey skies
Starc & Cummins take three wickets each
Ffion Wynne, Stephan Shemilt, Sam Drury and Timothy Abraham
Gerald Coetzee survives the hat-trick ball.
What on earth has just happened?
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Travis Head is on a hat-trick and you have to say they are two poor shots.
Jansen lbw b Head 0 (SA 119-6)
Travis Head is on a hat-trick! Yes, you read that right. Travis Head.
Marco Jansen looked very, very nervous facing his first ball. He tentatively goes back to a full delivery and is pinned in front, with replays showing the ball hitting leg stump.
After such a promising fightback from Miller and Klaasen, South Africa are in a whole heap of trouble once more.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
He has to review this, but he didn't move. This is Travis Head bowling, not Jim Laker.
My word! Travis Head has two in two!
Marco Jansen reviews but it's out of desperation. He had to review because he's the last recognised batter, but this looks very out.
Firdose Moonda
Cricinfo writer on BBC Test Match Special
I did wonder if he was getting tired and losing some concentration, then he hit those two fours in this over. It didn't turn massively, not a threatening delivery. He just missed it.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
How has he missed that?
Klaasen b Head 47 (SA 119-5)
Or not.
Heinrich Klaasen whacks the first two balls of the over for four, but then just misses a straight one. A bizarre and innocuous dismissal, and Travis Head can't believe it!
Another blow for South Africa just as the partnership was starting to give Pat Cummins a headache.
Thank you, Tim.
Part-timer Travis Head is into the attack, and I suspect Heinrich Klaasen will fancy having a go at this.
Travis Head is preparing to bowl and Ffion Wynne is ready to pick up the baton from here while I scuttle off to make a cup of tea.
How many will South Africa manage to get here Ffion?
Firdose Moonda
Cricinfo writer on BBC Test Match Special
David Miller's batting style has evolved so much over the years.
He started off as a pure hitter, then trying to box himself in as a finisher and now he has a real maturity to his game.
Glenn Maxwell is playing his part with the ball today. Holding up an end with his accurate off-spin while Adam Zampa attempts take wickets at the other end.
David Miller is unbeaten 48 and Heinrich Klaasen is 39 not out. A good fightback from the Proteas.
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Ethans on the tube: Good news for Australia is that batting looks resting easier. But they’d want to get a few wickets now.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Miller was onto that quickly. That was almost a no-ball and he has clubbed it for six over mid-wicket.
That's a good sign, that even in a rebuilding phase, he can pick up the bad ball and hit it for six.
A freebie offered up by Adam Zampa to David Miller and the South Africa left-hander makes no mistake, pulling a toss high into the stands.
Firdose Moonda
Cricinfo writer on BBC Test Match Special
Klaasen ran into Zampa and is now bleeding from the bridge of his nose.
I think it is the helmet that has cut him.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
That would have been interesting. Klaasen was running for dear life, he knew he was in trouble and then collided with Zampa.
Zampa is OK but Klaasen has called for the physio.
Heinrich Klaasen takes a risky single off Adam Zampa.
The throw from the fielder at extra cover misses the stumps. A direct hit to the non-striker's end and he might have been in trouble.
Klaasen collided with Zampa attempting to make his ground and requires a bit of treatment after bumping his head.
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P: Good to see South Africa fight back, hope they can give Australia a good innings. Concerning for OD World Cricket though that a team who win on one flawed strategy - bat first - are in the semifinals after finishing 2nd in round-robin.
Firdose Moonda
Cricinfo writer on BBC Test Match Special
It is great that these two are showing some fight for South Africa and a different playing style as well.