So nearly 5-0!

It's a great delivery into the box by Katie McCabe and Arsenal defender Jen Beattie is the first to it, clattering her header against the crossbar.

The Scotland international had timed her run too early though, and play is brought back for an offside.

Back to Walton Hall Park and with 30 minutes to go Arsenal are very happy to pass the ball sideways, waiting for the crucial moment.

Everton are dropping deeper and deeper.

Image source, Getty Images

Paul Konchesky makes three changes to the West Ham team who lost to Brighton in their last WSL game.

Anouk Denton drops to the bench alongside Izzy Atkinson and Emma Snerle. In comes Amber Tysiak and returns for regulars Risa Shimizu and Kirsty Smith.

West Ham XI: Arnold, Smith, Shimizu, Tysiak, Evans, Brynjarsdottir, Longhurst, Parker, Fisk, Cissoko, Asseyi.

Subs: Hillyerd, Snerle, Atkinson, Thestrup, Denton, Hayashi, Cooke, Houssein, Ademiluyi.

Emma Hayes makes seven changes to the Chelsea side who beat Manchester United to win the FA Cup on Sunday.

Midfielder Sophie Ingle, who impressed at Wembley, earns a recall, while Pernille Harder starts up front alongside Sam Kerr.

There's three changes to the backline with defenders Eve Perisset, Melanie Leupolz and Maren Mjelde all dropping to the bench.

Key midfielder Erin Cuthbert and creative maestro Guro Reiten are also rested.

Chelsea XI: Musovic, Ingle, Carter, Eriksson, Fleming, Kaneryd, Kerr, Charles, Harder, Buchanan, Cankovic.

Subs: Berger, Leupolz, James, Reiten, Svitkova, Perisset, Mjelde, Cuthbert, Abdullina.

Chance for Arsenal as Jodie Taylor, on her 37th birthday, meets a deep cross but can't head the ball goalwards.

The visitors look the far more likely to score next.

The atmosphere has gone completely flat now.

To a standing ovation Lia Walti goes off the pitch on a stretcher.

She'd just signed a long-term deal with the club. Let's hope it's not as serious as it looks.

Kathrine Kuhl is on for the Gunners.

Former England international Sue Smith on Sky Sports: "I think it was the right decision.

"Aggie Beever-Jones was late, it was over the ball and the studs were up. You've got to feel for her because I don't think there was any intent but you can't challenge like that."

Walti is still down on the pitch. A stretcher is beside her now.

Drama! Aggie Beever-Jones' card has been upgraded from a yellow to a red. She leaves the pitch in tears helped off by her captain Nicoline Sorensen.

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Lia Walti is still down receiving treatment. This doesn't look good.

Image source, Reuters

Right then, what can we expect this half? The first bit of the first half was incredibly even, but then Arsenal clicked into an extra gear.

On the pitch, Everton's Aggie Beever-Jones drives forward but looses control of the ball, she stretches trying to recover it but catches Lia Walti above the ankle.

Yellow card for the Chelsea loannee.

Peeeep. Arsenal get us back under way.

And Arsenal also make a switch. Jodie Taylor comes on for Rafaelle.

There's a change at the break for Everton. Defender Rikke Sevecke comes on for Aurora Galli.

The players are slowly making their way back out. Second half should be starting shortly.

Everton were 5-0 down at half-time against Chelsea last time out. I guess this is an improvement.

They weren't bad, Arsenal have just been ruthless.

Let's talk about Caitlin Foord for a second.

This is her first start since 2 April and after six weeks out she nets two inside the first 45 minutes.

She's looked so lively and will be after a hat-trick in the second period.

Image source, Getty Images

As things stand Arsenal are going three points clear of fourth-placed Manchester City.

They're also three points behind current leaders Manchester United.

And that's the half. It was so even for the first 29 minutes...

The first of two additional minutes ticks by.