Australia bowled out for 177 to lose by 134 runs - heaviest World Cup defeat by runs
Stoinis given out caught behind on review but ball appeared to flick glove that was off the bat
Smith given out lbw on review - batter felt ball was missing leg stump
South Africa post 311-7 - De Kock 109 (106), Markram 56 (43); Maxwell 2-34
De Kock hits second century in as many matches
Sloppy Australia drop five catches, with Zampa also failing to get to chance
First ball after drinks and Quinton de Kock finds the boundary.
He aimed a big shot leg side, mistimed it but still found the gap for four.
Four more! A reverse sweep and this one is middled, past short third and it races away to put really pressure on Adam Zampa early in the over.
Aaron Finch
Former Australia captain on BBC Test Match Special
It was a really big decision for Australia to come in with players that are under-done. It could work into their favour later in the tournament because they will be fresh but it is a risk.
Here is one of three chances Australia have missed to dismiss Temba Bavuma...
Jonathan Agnew
BBC cricket correspondent on Test Match Special
This is just the start that South Africa would have wanted but Australia have had chances.
SA 88-0
Quinton de Kock continues his fine start to the tournament as he pushes a single to bring up his half-century from 51 balls.
Five fours and two sixes for the left-hander and he's still got plenty more gears to go to.
Australia have plenty to discuss as the players take drinks.
Aaron Finch
Former Australia captain on BBC Test Match Special
It's a skill they work on so much. Instead of throwing it under arm he's done a sidearm flick and tossed it over his head. He did all the hard work, got into a good position but just too much on the throw.
SA 87-0
A failed relay catch in the deep and Temba Bavuma survives again!
Bavuma had heaved the ball leg side, sub fielder Sean Abbott runs back to take it and then tries to throw it back to Mitchell Starc as he goes over the rope.
However, he puts too much on the throw and sends it over Starc's head. Another let off for Bavuma.
Temba Bavuma welcomes Marcus Stoinis to the attack by pumping his first ball over mid-on for four.
That might help the Proteas skipper get going.
De Kock 49, Bavuma 25
Quinton de Kock is a man in form and he's making the most of it.
He takes on the slower tempter from Adam Zampa to end the over and lifts it up and over mid-off with ease. Four runs.
Mitchell Marsh replaces Pat Cummins and gets through his first over without much trouble.
Just six from the over as South Africa continue to tick along nicely. They're really building a strong platform for that powerful middle-order.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Temba Bavuma definitely got something on that, but it struck the wicketkeeper on the knee. Josh Inglis could not quite take that on the rebound.
SA 68-0
Adam Zampa into the attack and rips one past Temba Bavuma's outside edge.
Was it past the edge or did it take it?
It was an edge! A big nick, in fact, but Josh Inglis can't take it stood up to the stumps. It misses his gloves and then bounces off his thigh and goes to ground.
De Kock 41, Bavuma 19
Pat Cummins comes back well after that first-ball six and concedes just a single from the next five balls.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Quinton de Kock really does look in a good form. This is an excellent start by South Africa. Their powerhouse batters are still to come. Potentially, this could be a really big score.
Short from Pat Cummins and Quinton de Kock hooks it over fine leg for six!
I don't think that came out of the middle of the bat but there was still more than enough on it to carry comfortably into the stands.
Firdose Moonda
Cricinfo writer on BBC Test Match Special
South Africa's spinners Tabraiz Shamsi and Keshav Maharaj will not mind seeing the ball spin like that. That looks a good selection now.
So close!
Temba Bavuma goes back to try and guide Glenn Maxwell to third but the ball turns back sharply, beats the bat and only just goes over the top of off stump.
Firdose Moonda
Cricinfo writer on BBC Test Match Special
I am a little bit concerned about how Temba Bavuma is playing. He carries a lot of pressure because there's so much extra expectation as the captain of South Africa.
Quinton de Kock brings up the 50 for South Africa with a boundary from the last ball of the powerplay.
He cleared his front leg and muscled Pat Cummins over the leg side for four.
Not pretty but plenty effective.
Geoff Lemon
BBC Test Match Special commentator
I think Adam Zampa lost the ball in the glare of the sun. He had time to get there but didn't know what the destination was.