100 up for Englandpublished at 13 overs

13 overs

Eng 100-3

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Nine from the over as England reach triple figures. This partnership is worth 77 off 58 balls.

Alex Hartley
Former England bowler on Test Match Special

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An unbelievable effort from Nadine de Klerk. Soon as Heather Knight hit it, I thought it was going for six, but it just plugged in the grass and trickled towards the boundary sponge.

The way these two have run between the wicket has been impressive. There's a real understanding between them.

Heather Knight goes up and over extra-cover for four, despite an acrobatic diving effort from Nadine de Klerk in the deep.

This looks better for England, too...

Image source, Cricviz

Jem Green
CricViz data analyst

Nat Sciver-Brunt and Heather Knight are two of the best batters to have at the crease in this situation. Their wealth of experience is reflected in their career T20I dot ball percentage, and they will keep the scoreboard ticking over.

Of all batters to have scored more than 1,000 T20I runs, they both feature in the top five for the lowest dot ball %:

• Perry (Aus) 30.9%
• Kaur (Ind) 32.1%
• Knight (Eng) 32.4%
• Rodrigues (Ind) 32.5%
• Sciver-Brunt (Eng) 33.0%

Four more. Heather Knight waits patiently back in her crease and cuts it down to the third boundary.

Momentum firmly with England now.

Alex Hartley
Former England bowler on Test Match Special

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It is that risk and reward. South Africa have used Marizanne Kapp, who was so good in the powerplay. She was outstanding, but she is bowled out now and England's batters can relax a little bit.

Lovely! Nat Sciver Brunt sets herself up early and ramps Ayabonga Khaka for four.

England are finding the boundaries and working the ones and twos.

Alex Hartley
Former England bowler on Test Match Special

South Africa have burnt their best bowlers, but I respected it and I liked it.

There seems to be some real intent from England now. Eleven from the over as the run-rate goes above seven.

Alex Hartley
Former England bowler on Test Match Special

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That brings up the 50 partnership for Heather Knight and Nat Sciver-Brunt. It was a poor ball from Chloe Tryon.

Nat Sciver Brunt steps across her crease and sweeps spinner Chloe Tryon for identical back-to-back fours.

Alex Hartley
Former England bowler on Test Match Special

A brilliant partnership so far, and it's a nice little rebuild from these two. They need to start accelerating now.

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Who do you think is going all the way in this competition?

Three more singles. Nat Sciver-Brunt's calf looks fine so far.

We're at the halfway stage of the innings.

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Should Alice Capsey have reviewed this?

Henry Moeran
Commentator on BBC Radio 5 Sports Extra

England are moving forward and beginning to see this partnership creak into gear.

Nadine de Klerk - who has picked up six wickets in the tournament so far - is introduced.

Nat Sciver-Brunt whips her through mid-wicket for four. Some good running between the pair brings two more.

England are growing in confidence.

Alex Hartley
Former England bowler on Test Match Special

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Brilliant from Heather Knight, who knows they need to pick up that run-rate now. It races for four. I said at the start of the day 170 minimum if you bat first.

Great stuff from Heather Knight. She picks up a fuller delivery from Nonkululeko Mlaba early and sweeps for four. It whizzed to the boundary.

Eight from the over.