Boos ring around the Cardiff Arms Park as Courtney Keight is deemed to have knocked the ball forward - while replays suggest it was ripped backwards by an American hand instead.

Another penalty goes USA's way and the chorus of boos gets louder.

It's unrelenting pressure from the visitors in this second half, but they only have the five points to show for it.

More good defending from Wales, who this time manage to tackle Telesi Uhatafe into touch.

In fact the referee Amber McLachlan deems there was a knock-on in the process of the tackle, so it will be a Welsh scrum instead deep in their own half.

The USA are back into the Welsh 22 after a good run down the left wing from Telesi Uhatafe.

Wales are really under the cosh here.

Caryl James
Former Wales wing on BBC Radio Cymru

Nice to see Molly Reardon get her chance.

She is an exciting player for the future, she's still learning her trade but over the park she is really good.

Wales appear the have the edge at scrum time, but the USA pack do just enough each time to avoid being penalised.

Molly Reardon is now on for Wales, replacing Kelsey Jones - whose try for Wales after half an hour feels a distant memory after all the action we've seen!

More unforced errors from Wales, who win the scrum but knock the ball forward in the first phase once again.

It will be a USA put in on the Welsh 10-metre line.

Wales are yet to lay a glove on USA in this second half, which has almost exclusively been played in the Welsh half.

They did not flinch in the first half after a slow start, but Wales will need to show the same resilience and fight here in the second half.

Elinor Snowsill
Former Wales fly-half on BBC Radio Wales

Nant Conwy is a club that has produced some very talented players over the years.

Dyddgu Hywel at 15 from my playing days then you've got Gwenllian and Alaw Prys, the Metcalfe's and more recently Elan Jones.

And they are all very strong because they are all farmers.

Nikita Prothero and Gwen Crabb are on for Wales, replacing Carys Cox and Branwen Metcalfe.

Molly Reardon looks set to come on at hooker, she will be on shortly.

Siwan Lillicrap
Former Wales captain on BBC One Wales

Freda Tafuna is different gravy, she really is.

That is not an easy finish, but she drives through the contact and knows where the line is.

She is everywhere.

The ball is loose in the Wales 22 and USA jump on it.

More trouble for Wales.

Ceri Coleman-Phillips
BBC Sport Wales rugby reporter at Cardiff Arms Park

Kate Williams has thrown her body on the line all afternoon. She epitomises what Sean Lynn calls "the Welsh warrior".

Siwan Lillicrap
Former Wales captain on BBC One Wales

It's getting fiery out there now.

The referee is getting a lot of volume from both sides, a sign of how tight this game is.

Sisilia Tuipulotu does well to rip the ball out of Freda Tafuna's arms but unfortunately for Wales the rip goes forward.

It will be a scrum to USA just outside the Welsh 22.

Wales respond in kind, brining on Gwenllian Pyrs in the front row for Maisie Davies.

A change in the front row for USA as Alivia Letherman replaces Keia Mae Sagapolu.

Great call, Siwan.

Wales turn the ball over through Bryonie King before Lleucu George takes her laces to the ball to clear up to half way.

Danger averted - for now.

Siwan Lillicrap
Former Wales captain on BBC One Wales

Wales have defended their maul very well this afternoon so far.