A first four for Brooke Halliday, punching Filer away through backward point.

The shot evades Charlie Dean leaping to her right, before boundary rider Alice Capsey dives over the ball going to her left.

Ffion Wynne
BBC Sport cricket writer in New Zealand

It's Kerr or nothing now for New Zealand, and she's batting like she knows it.

Maddy Green's aggression helped take the pressure off her and you could see her freeing up, but she's got to bat through the innings now.

Brooke Halliday is next up for New Zealand.

She gets off the mark from Dean's penultimate delivery, knocking a single into backward square.

Frankie Mackay
Ex-New Zealand all-rounder on BBC Sounds

Image source, Getty Images

Maddy Green had done all the hard work and got through a touch patch when everything looked difficult.

She was just starting to play a bit expansively and then little error creeps in. That's all you need.

And four more for Green, firing Lauren Filer away in much the same area as Kerr in the previous over.

Amelia Kerr picks up four, sweeping Charlie Dean aggressively to the boundary behind square.

It's only the second time she's reached the ropes in this innings, and brings up the fifty partnership between this pair from 12.3 overs.

The hundred finally comes up for New Zealand, Maddy Green picking up a single to mid-wicket from the final ball of Lauren Filer's over.

They really need to press on from here.

Ebony Rainford-Brent
Former England batter on BBC Sounds

Kate Cross has done her business, finishing her 10 overs with figures of 1-31. She's just probed and chipped away. That is what you want from your senior bowler.

Frankie Mackay
Ex-New Zealand all-rounder on BBC Sounds

Maddy Green has got lovely long levers. Her timing of the ball is what has always stood out.

I'm starting to think Maddy Green might have sent in a doppelganger initially and has only just slipped onto the field.

She twice fires Charlie Dean down the ground for four - another through long-on, the second a little straighter.

The run-rate has soared to 3.39.

Ebony Rainford-Brent
Former England batter on BBC Sounds

This is what has been frustrating, I've seen Maddy Green and I know she's got these shots. That was a lovely shot.

Kevin Howells
BBC Test Match Special commentator on BBC Sounds

I tell you what, if she's got shots like that why are we talking about eight off 29 balls?

Where did that come from, Maddy Green?

She lifts Kate Cross impressively for four through long-on, doubling her score in the process.

A few more of those, please.

Ebony Rainford-Brent
Former England batter on BBC Sounds

Image source, PA Media

I'd love to just shake up this New Zealand batting line-up. I would do it completely differently.

Thanks Tom - not a thriller, is it?

Amelia Kerr drops to a knee to sweep Charlie Dean aggressively to the mid-wicket boundary, where Nat Sciver-Brunt awkwardly collects.

The New Zealand batters take two, the only runs from the over.

Maddy Green doubles her score with a nicely guided cut to deep third. Perhaps a sign she is finally feeling comfortable out there.

Still, 78-3 at the halfway point looks nowhere near enough.

What can the second half of the innings bring? Hopefully some excitement.

Here's Mike Peter to guide you through it.

Ebony Rainford-Brent
Former England batter on BBC Sounds

If New Zealand get around 150 then I would expect that to be chased down with ease, they've got to get up to at least 200 to be competitive.

Maddy Green is racing now. She moves to two from 21 deliveries.

Apologies for the sarcasm, but New Zealand really need to show some aggression if they want to post a competitive total.

Sophie Ecclestone showed a bit of class to dismiss the dangerous Sophie Devine, who was just showing signs of getting going.

New Zealand's innings has since ground to a halt.