A reminder that it's transfer deadline day for the WSL today.

Manchester United have been the busiest, signing both England midfielder Jade Moore and Republic of Ireland defender Diane Caldwell.

Clubs have until midnight to strike international deals.

Samantha Miller
Ex-Tottenham, West Ham and London Bees player on BBC Radio 5 live sports extra

I'm sure there is a big performance to come from Arsenal in the second half. They really will have to shift the way they're playing. It will be interesting to see what Jonas Eidevall has to say at half-time.

Sometimes it seems like they're running out of ideas. He needs to install new ideas in them. And can Brighton maintain this?

The frustrated figure of Vivianne Miedema, with hands on hips and head down, just about sums up Arsenal's night so far.

It took a very late equaliser to salvage a draw against Manchester City at the weekend. Going by that first 45 minutes, a reply is again going to be hard to come by.

Image source, Getty Images

The half-time whistle goals.

Emma Koivisto ended Brighton's lengthy goal drought to put the Seagulls ahead against the league leaders.

The fourth official indicates that there will be two minutes of injury time.

Is it enough for Arsenal to strike a blow?

Brighton have refused to yield.

Beth Mead does well to drift into space on the left. She then tries to pick out Kim Little with a cross, but the Seagulls are on it like a chip on the seaside.

Samantha Miller
Ex-Tottenham, West Ham and London Bees player on BBC Radio 5 live sports extra

Arsenal need to take better care of the ball. We're seeing unforced errors, the ball going off the pitch. We're used to seeing Arsenal keep position really well and find those passes.

Arsenal manager Jonas Eidevall is pacing up and down his technical area trying to direct his players.

They have lacked spark so far in this half. I'm sure he will have plenty to say at the break.

No. No they can't.

Jordan Nobbs is the one to eventually take the free-kick. She lifts it over the wall, but it lacks power and Megan Walsh easily gets across to deal with it.

Aileen Whelan doesn't look happy after going into the back of Kim Little to give away a free-kick just outside the box.

Replays show the Brighton midfielder has little to complain about.

Can Arsenal now pull a goal back before the break?

Goalscorer Emma Koivisto is in some pain after timing a header all wrong. She manages to clear the ball, but she looks a little dazed.

It's fair to say her header for the goal was much, much better!

Brighton have only seen 33% possession so far in this game and have managed just one shot on goal. But they fully deserve the lead they hold against the league leaders.

Arsenal are now starting to string some passes together.

Vivianne Miedema finds Kim Little scampering away on the right wing with a first-time pass.

Little then tries to pick out Beth Mead, but the flag is up for offside.

Samantha Miller
Ex-Tottenham, West Ham and London Bees player on BBC Radio 5 live sports extra

It's just not quite clicking for Arsenal at the moment. If you look back to the beginning of the season their decision making was spot on. At the moment, it just looks like they're not quite sure of each other's roles.

It does seem like a lack of understanding, which is a surprise, when you look back at the beginning of the season how well they were clicking as a team.

This is just about Arsenal's best move of the game so far.

Jordan Nobbs gets on the ball on the edge of the area and tries to find Laura Wienroither with a backheel pass.

It takes a superb tackle from a Brighton defender to limit the damage.

A swing and a miss for Beth Mead.

The England forward tries to meet a cross into the box with a first-time shot. She doesn't get anything on it and the ball runs dead.

Another corner for Arsenal which the hosts fail to make anything of. The WSL leaders haven't yet got going, one feels.

Ellie Brazil is the first to be booked, she clips Beth Mead as she tries to race away.

Arsenal were trying to break away after a cross into the box caused all sorts of issues after Gunners goalkeeper Manuela Zinsberger failed command the area and to collect the ball.

And Megan Connolly won't be able to carry on.

The good news is that she is up and able to walk towards the bench, but on comes Aileen Whelan.

Megan Connolly is not looking great after clattering into the advertising boards. She gets some medical attention and may not be able to continue.