Postpublished at 13:08 British Summer Time 21 October 2023
Simon Mann
BBC Test Match Special commentator
It is all going wrong for England here.
England thrashed by 229 runs - their heaviest ODI defeat
Only Wood (43*) and Atkinson (35) show any resistance
SA post 399-7 after sublime 109 from Klaasen and 75 not out from Jansen
Hendricks hits fine 85 and Van der Dussen makes 60
Topley takes 3-88 despite finger injury as England's bowlers toil in the heat
Ffion Wynne, Timothy Abraham and Jonty Colman
Simon Mann
BBC Test Match Special commentator
It is all going wrong for England here.
Oh dear, oh dear.
Klaasen whacks David Willey's first ball for six, just hitting the ropes on the full.
And just to add a little more salt into England's wounds, it's called a no-ball.
Heinrich Klaasen has got five overs to do as much damage as he can.
He can barely walk for exhaustion but the man has a very determined look on his face.
Simon Mann
BBC Test Match Special commentator
That is probably the best over Mark Wood has bowled, even though he was clubbed for four. It's a great effort from him at this stage.
Very generous of Marco Jansen to give his team-mate a rest, by clubbing Mark Wood over cover for four more.
Wood responds with a nasty bouncer that Jansen fends off well.
A reaction of frustration from Wood, who has 0-61 from his six overs.
The South Africa physio has the lovely job of bringing the batters a drink, and helping Klaasen change his socks.
Matthew Henry
BBC Sport in Mumbai
I went outside earlier and was sweaty within about a minute. England have probably played in hotter conditions in this World Cup but it's the humidity here on top that's making it so tough.
Nearly! Klaasen mis-times a Mark Wood slower ball, and it loops up into the air softly but lands safe.
He drops his bat while running the single, probably from pure exhaustion.
There are beads of sweat dripping from his helmet. This is a phenomenal effort from him.
Klaasen came into this World Cup as one of the world's form batters, and he's shown every inch of his class so far today.
Phil Long
BBC Test Match Special statistician
Even if South Africa do not score any more from here, England will already have to record their biggest ever successful run-chase in a World Cup match to win.
The crowd is really getting into this now.
The noise intensifies as Marco Jansen does his job, taking the single first ball to hand the strike over to Klaasen, who has launched himself to 81 from 52 balls.
Steven Finn
Former England bowler on BBC Test Match Special
This has been savage so far. Reece Topley, with a bad finger, has had to spend a significant time off the field. He's bowling with a taped up finger, Adil Rashid has bowled with an upset stomach. South Africa could be on for a very big score here.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
How fit is Klaasen? He's down on his knees again, down on his haunches. These are telling blows for England.
Wow.
Heinrich Klaasen really has had enough of running, hasn't he?
Reece Topley can only watch the ball sail over his head and into the stands.
This is a masterclass. England are flagging and South Africa are cashing in.
19 from the over.
Four more! Crashed through the covers past a despairing dive from the fielder.
300 up for South Africa.
Steven Finn
Former England bowler on BBC Test Match Special
It's like a baseball shot, just clubs it down the ground for a hard four.
Well, one way to avoid running is to just deal in boundaries.
Marco Jansen does just that, clipping Reece Topley's first ball through mid-wicket, before Klaasen crunches the third through the covers for another boundary.
That brings up the 50 partnership and this is looking rather dangerous for England.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Adil Rashid is walking off very slowly having given 100%. I think he'll be sitting under a cold shower for 20 minutes.
Matthew Henry
BBC Sport in Mumbai
Adil Rashid heads straight off after his 10th over. 2-61 in his condition looks a superb effort. He'll be hoping he isn't needed to bat.
Just watching this is making me feel exhausted.
Heinrich Klaasen is walking the singles to long-on, while England's fielders are on their knees and desperately trying to mop sweat from their brows in between balls.
Steven Finn
Former England bowler on BBC Test Match Special
The stadium is like a bowl so the heat bounces around it and feeds back out on to the pitch. Adil Rashid looks the most ill - he has his hands on his knees and is looking at the ground. He looks absolutely exhausted.