We're all square now, but here's how Reading took the lead earlier in this semi-final...

Reading cause problems from a deep free-kick, but Lauren Bruton and West Ham keeper Anna Moorhouse collide, and play breaks down as those two just get checked over.

Thankfully, they're both fine. It was brave goalkeeping from Moorhouse that quite possibly prevented the Royals from restoring their lead.

Now Fara Williams whips in a cross for Rakel Honnudottir but the Iceland striker's header goes wide.

Fara Williams hits the post! The Reading star's low spot kick bounces back out off the post, after the keeper went the right way, down to her right.

This time Reading DO get a penalty and rightly so. Lauren Bruton's shot is blocked by the arm of West Ham defender Gilly Flaherty, who is booked.

Minutes after being denied a clear penalty, Reading will now have a chance to retake the lead from the spot.

Jayne Ludlow
Wales manager and former Reading boss on BBC Sport

“That’s definitely a penalty – her knee catches her shin.

"If I was Jo Potter, I would feel very hard done by. You can always tell by players’ reactions."

Iceland's Rakel Honnudottir is coming on for Reading, in an attacking change, with Jade Bailey going off.

Referee Samuel Allison has made a huge call there and - for me - he's got it wrong unfortunately.

I'm amazed this hasn't been given as a Reading penalty!

Jo Potter is clearly brought down by West Ham's Kate Longhurst, in the area, but Potter is booked for simulation!

Reading are furious about that. You have to say, Longhurst was nowhere near the ball.

West Ham create another promising opportunity, but left-back Claire Rafferty does not catch her cross as well as she'd like and it flies behind for a goal kick.

Jayne Ludlow
Wales manager and former Reading boss on BBC Sport

“Lehmann's a player they have wanted to get on the ball for 56 minutes because she can do things like that.

"It’s a bit of a toe poke and it’s a disappointing goal from a Reading viewpoint, a bit scrappy, but it’s great from a neutral perspective that West Ham have got back in the game."

And judging by the comparative noise when that goal went in, I'd guess there are more West Ham fans at Adams Park than there are Reading followers this afternoon.

Lauren Bruton latches on to a through ball down the middle, but - under good pressure from West Ham defender Gilly Flaherty - her low shot is straight at the keeper.

Jayne Ludlow
Wales manager and former Reading boss on BBC Sport

“It was a good delivery from the wide area by Jade Moore and it’s an aggressive header from Rachel Furness. That’s why she’s playing as a striker.

"You’d be disappointed from a West Ham perspective as somebody has got to make contact with her there and put her off."

Reading's opening goal came from one of the first efforts on target in the game, after a cagey first half.

Now West Ham will have to take some more risks and the game could well open up a lot more.

West Ham are forced in to a change, as Lucienne Reichardt was injured in challenging for the ball in the middle of the penalty area with goalscorer Rachel Furness.

Brianna Visalli comes in to the Hammers' midfield instead.

Back at Adams Park, neither side has made a change at the break.

Visitors West Ham - playing in their traditional claret kit - get the second half going through Jane Ross.