Postpublished at 19:39 British Summer Time 15 July 2022
Alex Hartley
Former England bowler on BBC Test Match Special
Kapp is key now for South Africa! She has to just go for it! It's a big old mountain for South Africa to climb.
Dean stars with four wickets; Wong takes three wickets on debut
Dunkley hits her first ODI century - off 87 balls
Lamb and Beaumont put on 127 for first wicket
England now lead multi-format series 6-2
Highlights on BBC iPlayer from 07:00 BST on Saturday
Tom Mallows, Stephan Shemilt and Ffion Wynne
Alex Hartley
Former England bowler on BBC Test Match Special
Kapp is key now for South Africa! She has to just go for it! It's a big old mountain for South Africa to climb.
Melissa Story
BBC Test Match Special
That's a dominating shot from Kapp there.
Trisha Chetty is the new batter as Emma Lamb continues with her second over.
Lamb drops one in far too short and Marizanne Kapp is on it in a flash, crouching down and powering the ball through the on-side for four. Brutal shot.
Melissa Story
BBC Test Match Special
A short ball from Issy Wong leaves South Africa in the mud. This game could be done and dusted very soon.
De Klerk c Sciver b Wong 0 (SA 138-6)
Nadine de Klerk goes for a six-ball duck.
It was banged in short by Issy Wong and De Klerk played a cross-batted swipe that looped straight to Nat Sciver at extra cover.
Thanks Stephan.
From 87-0 to 137-5. South Africa looked to be building a decent reply but things have crumbled somewhat. It all looks to be on Marizanne Kapp's shoulders.
Expect fireworks.
Target 338
Blessed relief for off-spinner Lamb is to bowl to new arrival Nadine de Klerk, a doughty competitor. Only one more from the over. Here's Tom Mallows.
Daniel Norcross
BBC Test Match Special
Kapp will not be deflected from her mission. She is trying to put the fight to England. It is very hard to see how they are going to get back into this game.
"Hi, Emma Lamb, I'm Marizanne Kapp. Fetch this."
First ball, four down the ground.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Fantastic bowling from Issy Wong! Identified as a plan and executed perfectly by Wong.
Daniel Norcross
BBC Test Match Special
Massive wicket! That really does feel like the last chance for South Africa. Amy Jones makes no mistake.
Tryon c Jones b Wong 8 (SA 132-5)
Not this time! Chloe Tryon did not look comfortable against the pace of Issy Wong. The last swipe at a short ball brought a streaky four, but this time it ends in the gloves of Amy Jones. Two for Wong, five for England, South Africa falling apart.
Spare a thought for Ireland's men.
They lost their first ODI against New Zealand by one wicket. Today they lost by one run - narrowly failing to overhaul the tourists' 360-6, despite both Paul Stirling and Harry Tector making centuries.
The full scorecard for that game is here.
Target 338
Up and over! Tryon swipes at Wong, only managing a top edge that flies over the keeper for four.
Daniel Norcross
BBC Test Match Special
This is how Kapp is going to play it then! Intent is shown!
Target 338
Biffage. Marizanne Kapp will take the fight to England. She gets low to fetch Charlie Dean for four. Dean has a smile on her face, but two misfields - one from Heather Knight and another from Sophie Ecclestone - is enough to darken even the most cheery outlook.
Georgia Elwiss
England all-rounder on BBC Test Match Special
If I was batting out there now, I wouldn't even look at the scoreboard. I would just play with intent and see where it gets me to.
Daniel Norcross
BBC Test Match Special
You feel like if South Africa are going to mount a challenge, it's going to be with this partnership between Kapp and Tryon.
Target 338
This a fiery battle between Wong and Kapp. The young tearaway and the old warrior. When Wong is a touch too wide, Kapp slashes for four. Chloe Tryon, the new arrival, dabs her second ball to third to get off the mark.
Daniel Norcross
BBC Test Match Special
South Africa are imploding here. The skipper had a tough time of it at Northampton and the same again today. The simplest of catches to Lauren Bell.