Sean Lynn is first to start rotating his squad as Jorja Aiono and Gwenllian Pyrs come off, with Maisie Davies and Alaw Pyrs on.

Heather Lockhart
Former Scotland prop on BBC One

That's an huge moment for Campbell and Scotland.

What an opportunity, her first try for Scotland.

She watched that ball so intently, great interplay from the set piece.

That's her sevens experience coming through.

Siwan Lillicrap
Former Wales captain on BBC One

It's a new look and new era, a lot of injuries from both sides missing quality players.

But what is really pleasing to see, it was a quality first half so is this a sign of other players stepping up and nations getting better strength in depth?

I think so.

Wales snatch a fifth line-out from Scotland and quickly break into space but Lleucu George's crossfield kick just slips through the fingers of wing Seren Singleton.

No changes yet for either side - how long before both head coaches start to look at their replacement benches?

Sean Lynn has gone for a 6:2 split whereas Scotland's Sione Fukofuka has opted for 5:3.

We've just had the official attendance for today's game flash up on the screen - 10,569 inside the Principality Stadium this evening.

A few handling errors from both sides to start this second half.

Wales gain territory through a penalty as they put Scotland's defence under pressure but end up giving away a scrum to Scotland, who clear the lines and eventually manage to push Wales back.

Heather Lockhart
Former Scotland prop on BBC One

Wales will be thinking more of the same.

Using the maul, using the power of Crabb and the precision of George and Bevan.

Scotland will be disappointed to not convert from that scrum just before half-time, that was something that would have been discussed at half time.

Scotland back row Sarah Bonar speaking pitch side on BBC One: "Wales are playing too well to my liking, they're getting off the line and stretching us defensively.

I think we need to play their game.

I want to be on the pitch!"

The players are back out on the field and the second half is up and running.

Can Wales hold on for their first Six Nations win under Sean Lynn?

Siwan Lillicrap
Former Wales captain on BBC One

I think Wales look comfortable today, the red wall is there.

Scotland haven't had the opportunity to attack because of how tight Wales have been.

They've made it challenging.

Ceri Coleman-Phillips
BBC Sport Wales rugby reporter at Principality Stadium

Wales already look a different side to the World Cup, defensively they are a lot tighter and we're starting to see some shape in attack.

They've made some dominant tackles and Gwen Crabb is having a lot of joy at the breakdown with a couple of turnovers.

Teenage lock Jorja Aiono has lived up to the hype on her debut, while Seren Singleton has had some nice touches out wide.

We must not get carried away though as there was a huge momentum shift towards the end of the half as Scotland began to find their way.

There's a half-time DJ set going on right now - but will Wales be the ones dancing at full-time?

Jade Konkel
Former Scotland & Harlequins forward on BBC One

Emma Orr identifying the ball and running those lines was instrumental to Rollie's try.

The support lines are there, and the centre partnership is the reason for that try.

Orr is so classy.

So it is almost two years to the day since Wales last won in the Women's Six Nations but they are now just 40 minutes away from addressing that.

This one however, is far from over. After an absorbing 40 minutes, that Helen Nelson penalty has left this one on a knife-edge at half-time.

Philippa Tuttiett
Former Wales international on BBC One

The stats look pretty equal, especially the tackles.

It's been a real defensive structure from Wales and the influence from Tyrone Holmes.

Wales have had the bulk of possession and territory but they go in at the break just two points ahead of Scotland.

Chloe Rollie put the visitors up but tries from Kelsey Jones and Sisilia Tuipulotu turned the games in Wales' favour.

But Scotland have been clinical and despite few visits to Wales' 22 Helen Nelson's penalty keeps them right in touch at the break.