Mix up in the Tottenham box once again. Barbora Votikova rushes out of her goal with the hope of claiming a flicked header into the box, but instead clashes with Shanice van de Sanden before eventually falling on the ball.

The Tottenham keeper stays down and will require treatment.

Lize Kop is back to her feet and play continues with 13 minutes remaining.

Will Leicester be able to hold on? Kop's efforts in goal have been a big help so far.

Fara Williams
Former England midfielder on BBC Two

West Ham were magnificent, right from the off. They made life difficult for Arsenal. West Ham came out a different team in the second half and Arsenal had no Plan B.

West Ham were aggressive and Arsenal, without Leah Williamson, were under pressure. Leah's performance was good, they are managing her minutes but without her they lost discipline.

Gilly Flaherty
Former Chelsea and England defender on BBC Two

It’s a huge result for West Ham. They want to pull away from the bottom of the pack, they want to pull away from Bristol City. You heard the roar when that final whistle went.

Every single player for West Ham has played a part in this. In all honesty, this result today gives Rehanne Skinner a bit of breathing space and a bit less pressure on her. Arsenal just didn’t look like they had a Plan B going forward and for me, the deserved winners are West Ham.

Now Liverpool's turn to attack. They work the ball from right to left and back again in search of a gap to break through the Tottenham defence.

In the end Jaz Matthews tries a forward ball into the box from the left hand side but it floats into the arms of Barbora Votikova.

Leicester goalkeeper Lize Kop has gone down and is holding her ankle.

The physios are on to give her some treatment.

Well, well, well. That is a huge defeat for Arsenal, three massive points for West Ham in the race to stay up, and now Man City have a chance to pull clear. What do you make of it all?

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The header is won by a Tottenham attacker, looked to be Molly Batrip up from the back, but it deflects out for another corner.

The second is cleared without fuss by Liverpool towards the halfway line once more.

Gareth Taylor and his team on the touchline at the Joie Stadium will undoubtedly have heard about Arsenal's result.

This is a big chance for Manchester City to pull three points clear from Arsenal if they manage to beat Leicester - remember, they didn't even make Europe last year.

Will Leicester keep them at bay?

Willie Kirk makes another change for Leicester, as Shannon O'Brien is replaced by Deanne Rose.

Corner to Spurs on the left hand side, their first of the game.

...and gives the Hammers breathing space at the bottom!

Image source, Getty Images

West Ham's first win in the WSL over Arsenal is a big blow for the Gunners at the top...

Image source, Getty Images

Liverpool look to build out from the back with Rachael Laws, Grace Fisk and holding midfielder Fuka Nagano exchanging passes in their final third.

Tottenham are content to let them have the ball there for now, pressing occasionally with Beth England and Martha Thomas if they step forward towards the halfway line.

West Ham have WON IT!

How have Manchester City not scored?!?!

Khadija Shaw is threaded through by Chloe Kelly and thrashes an effort off the post.

That isn't the closest they came though.

Oh, Laura Coombs. The ball falls to her feet, she can't immediately get a shot away, and when she does Lize Kop reacts incredibly well to scramble from one side of the goal to the other and push it clear.

Image source, Getty Images

Alessia Russo attacks it - headed over!

Arsenal have everyone up now, West Ham are so deep. Arsenal corner...

The match almost fallen into the pattern of a basketball game, you attack, then we attack, and so on, although not quite as frantic.

A basketball game on half speed if you will.

Neither side seem to be able to sustain any sort of pressure in the opposing half at the minute. Plenty of possession, but lacking a cutting edge.

That's Filippa Angeldahl's last action of the game and she's replaced by Jess Park.