Image source, Getty Images

A big question mark over Casey Stoney's Manchester United side ahead of their first season in WSL is how would they cope with the step up after dominated the Championship last season?

In the opening 20 minutes, they have matched their cross-city rivals - a side that won the FA Cup and League Cup double last term.

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live

Jane Ross has made a couple of great passes so far for United and her against Demi Stokes is worth watching on its own.

Manchester City are a side that look very comfortable on the ball. They shift possession around with confidence and are pressing high. Manchester United, a side that conceded just seven goals in the league last season, hold firm.

City force the first corner of the game in the 15th minute, but nothing comes of it.

Image source, Rex Features

Mary Earps is back on her feet and is keen to continue. That is certainly an injury to watch, but for now we continue unchanged.

Brighton have grown into this game, the first Bristol City Women's fixture at Ashton Gate since 2017.

Home keeper Sophie Baggaley is called into action again, punching unconvincingly at a Brighton corner before her defenders scramble to ball clear.

Emma Sanders
BBC Sport at Etihad Stadium

Manchester City's Demi Stokes and Manchester United's Jess Sigsworth are having a right old battle out wide. So far, Stokes has come out on top.

There is a moments pause at the Etihad Stadium as Manchester City goalkeeper Mary Earp seeks medical attention on her right ankle.

She is getting some heavy strapping applied, while on the sideline substitute keeper Aurora Mikalsen starts to warm up.

Could this be an early change and unexpected debut for Mikalsen, who only joined United 22 hours ago?

We are bringing you all the action from the Manchester derby today, with and updates from Bristol City's home game against Brighton today.

You can also listen in to full radio commentary from both matches, with BBC Radio 5 live at the Etihad Stadium while BBC Radio Bristol are following the action at Ashton Gate.

To listen in, just do to the top of the page and select your commentary option.

Leah Galton takes it upon herself to threaten for Manchester United.

She cuts in, glances up and lets rip. The shot is always rising, but the effort from the former Bayern Munich forward shows that newly promoted United mean business.

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live

Image source, Getty Images

The thing that has jumped out at me at the start is Janine Beckie - her pace looks absolutely incredible.

She's shown me already that she has got more pace than possibly any of the United defenders, she'll want the ball over the top.

A nervous early moment on the ball for Manchester United goalkeeper Mary Earps.

A pass gets caught under her feet and she eventually clears. That has added to the early tension of the occasion.

The opening two minutes was played exclusively inside the Brighton defensive third as Bristol City started on the front foot.

But it was Brighton who have gone closest to opening the scoring, with home keeper Sophie Baggaley clawing away a Lea Le Garrec cross from underneath her own bar.

Manchester City calm on the ball early on, but they quickly up the tempo to put United's defence under pressure.

Jill Scott on the right wing sends in a cross which finds Georgia Stanway, who shoots well off target. A warning shot, that certainly is

Emma Sanders
BBC Sport at Etihad Stadium

This is something we haven’t seen for a while. Manchester City Women and Manchester United Women lining up for the first time in the modern era. The noise went up when the players came out and it’s just gone up up another level at kick-off!

Image source, BBC Sport

We are under way in both games, the Manchester derby at the Etihad Stadium and Bristol City against Brighton at Ashton Gate.

Emma Sanders
BBC Sport at Etihad Stadium

Manchester United fans are making noise! The 'Barmy Army' as they're known, have pitched up behind the goal to my right with flags, banners and lots of red!

Image source, BBC Sport

The teams have lined up for pre-match pleasantries. We are just minutes away from kick-off.

The opening day of the season is always one of great optimism - a ball is yet to be kicked, no-one has conceded a goal, no points have been dropped.

So with the cap of optimism on (there is totally such a thing!), we are asking for your predictions for the WSL season.

You can share your thoughts on who will win the title, or simply tell us about how you think the campaign will pan out for your team.

Get in touch using #bbcfootball on Twitter.

She is the childhood Manchester United fan, who spent 12 years playing for Manchester City before becoming one of the Red Devils' statement signings.

England international Abbie McManus now finds herself lining up in the first Manchester derby to be played out in the Women's Super League.

Watch as the 26-year-old has her knowledge of United put to the test...

Aoife Mannion starts on her debut for Manchester City, with fellow newcomers Laura Coombs, Tyler Toland, Lee Geum-min and Matilde Fidalgo all named on the bench. Ellen White, the England striker, is yet to return after undergoing knee surgery.

For United, Mary Earps starts in goal on her competitive debut, as does Lotta Okvist, Jackie Groenen, Hayley Ladd, Jane Ross and former City star Abbie McManus.

Manchester City: Roebuck, Mannion, Houghton, Bonner, Stokes, Scott, Walsh, Wullaert, Weir, Beckie, Stanway.

Substitutes: Benameur, Coombs, Bremer, Toland, Park, Geum-Min, Fidalgo.

Manchester United: Earps, Okvist, McManus, M Turner, Ladd, Zelem, Toone, Groenen, Galton, Sigworth, Ross.

Substitutes: Mikalsen, A Turner, Harris, James, Arnot, Hanson, Smith

With the team news for City came an injury update on forward Lauren Hemp as well.