Nikhil Venkatesh: If Sophie Ecclestone can do that with the bat regularly, and keep up her bowling, she must be close to the best overall cricketer in the world.

Tim in Marlow: Take a bow, Sophie Ecclestone What an innings! #demolition.

Andy Zaltzman
BBC Test Match Special statistician

Sophie Ecclestone, before today, had never scored more than 17 in a T20 international. That was the joint second most runs scored in an over in a women's T20 cricket. Only Deandra Dottin, who hit 27, has scored more. Chloe Tryon has also scored 26 in an over.

England's innings stuttered a little at times, but Sophie Ecclestone's brilliant hitting in that final over has really boosted the total.

Ecclestone, in fact, top scored with 33 from just 12 balls.

Alison Mitchell
BBC Two

This is a punishing over for Klaas. It's a brilliant over for England. What a way to finish the innings. Two huge sixes. Leg side and into the wind.

Anya Shrubsole
Former England bowler on BBC Two

Those are two of the cleanest hits you could wish to see. It's hard to see what plan Klaas had there. It looked like it was bowl it and hope.

Eng 176-6published at 20.0 overs

20.0 overs

A brilliant final over for England as Sophie Ecclestone pumps another six.

Masabata Klaas is a tad fuller but Ecclestone uses those long levers to whip it over that square leg boundary for another six.

England finish with a flourish.

Anya Shrubsole
Former England bowler on BBC Two

That is some hit. It was into the wind and it cleared the boundary by some way. That has gone miles.

Eng 166-6published at 19.4 overs

19.4 overs

Sophie Ecclestone backs into her crease, picks up the length of a slower ball Masabata Klaas, and heaves it over the square leg boundary for a huge six!

Alison Mitchell
BBC Two

Another misfield. It's been a disappointing feature in South Africa's game throughout the series.

Masabata Klaas lets the ball slip down the leg side, Sophie Ecclestone is able to get some bat on it, and a misfield from Nonkululeko Mlaba at short fine and the ball races away for four more.

Alison Mitchell
BBC Two

That deserved to be put to the boundary. Klaas has to be better than that in the death overs.

A high full toss from Masabata Klaas and Sophie Ecclestone is able to lift it over gully for four.

Andy Zaltzman
BBC Test Match Special statistician

England have scored 42 runs from overs 16 to 19.

Final six balls. Masabata Klaas with ball in hand, Sophie Ecclestone on strike.

Alison Mitchell
BBC Two

Sophie Ecclestone swatted it and found that gap beautifully. She just waited for that.

Sophie Ecclestone waits for one that Ayabonga Khaka and uses her big reach to whack it across the line, wide of the long-on fielder, and to the boundary for four.

England were going well with Danni Wyatt and Nat Sciver but South Africa got them both in the space of two balls a littler earlier.

Ayabonga Khaka with the penultimate over. Katherine Brunt and Sophie Ecclestone at the crease for England.

Lizelle Lee
Former South Africa batter on BBC Two

With the big wickets that South Africa had taken, I was hoping they would restrict England to 150. But it looks like they may just go bigger.