Lleucu George is on at full-back to offer Wales her giant boot as they look to relieve some pressure.

Wales are being pinned back at the moment despite a clear advantage at the set-piece.

Approaching the hour mark and still only one try in it.

Elinor Snowsill
Former Wales fly-half on BBC Radio Wales

It all feels very frantic at the moment, especially in attack.

Wales are managing Japan defensively, but once they've got the ball in hand I'm not sure they're all quite on the same page.

With Gwenllian Pyrs and Gwen Crabb now on the pitch there was some real power coming through that Welsh scrum.

Japan still in possession though and turning up the heat.

Philippa Tuttiett
Former Wales international on BBC One Wales

I'm not surprised Sean Lynn has taken this opportunity to offload the bench.

They need a bit of a shake up to try and break this locker head that they're in with Japan.

Play has been stopped for about six minutes now and both medical teams are treating Bell for what is almost certainly a serious injury.

Courtney Keight is already on the field to replace the young centre who is about to be carried off on a stretcher.

Gwenllian Pyrs is also on for prop Maisie Davies while back-row Bethan Lewis and lock Gwen Crabb are also on.

Caryl James
Former Wales wing on BBC Radio Cymru

That is such a shame for Freya Bell.

She has been one of Wales' best players over the last three games.

Let's hope the injury is not too serious but she looks like she's in quite a lot of pain.

This is a worry for Wales with centre Freya Bell down on the ground clutching her leg.

Play has stopped for treatment but she does not look good.

It appeared she was injured while being cleared out - legitimately - at a ruck.

Co-captain Alex Callender looks to be consoling her while the medics get to work.

First changes of the game as Japan replace their entire front-row.

Japan went through 12 phases as they pressed for an opening or a soft shoulder but Wales held firm.

Kate Williams comes up with yet another crucuial turnover and then Massie Davies wins a penaltry.

Impressive discipline by Wales.

Philippa Tuttiett
Former Wales international on BBC One Wales

Wales are having to work really hard for any sort of possession in this game.

Powerful carry from Japan centre Sophie Langford who just swats aside a would-be tackler.

But that is matched by impressive defence from Wales flanker Kate Williams who gets her hands all over the ball at a Japan lineout to snuff out the driving maul.

Even stevens right now.

Elinor Snowsill
Former Wales fly-half on BBC Radio Wales

We haven't seen Wales play to their strengths yet and if they do they will be very dangerous.

Big couple of minuites for Branwen Metcalfe.

The lock wins a turnover and then leaps high to secure the lineout.

What a day for the Metcalfe family as Branwen and wing Nel start a Test for the first time.

Caryl James
Former Wales wing on BBC Radio Cymru

The conditions are tough out there, but it's not an excuse to not play the way that we know they can.

They need to keep the ball and be a lot more patient on the attack.

The rain has eased and we're back under way.

Caryl James
Former Wales wing on BBC Radio Cymru

It's great to go in at half time in front.

Wales have had their chances, they've made lots of mistakes and their discipline hasn't been great, so there is definitely a lot to talk about for them.

A big half to come for Wales.

Looking at the statistics from the first half shows both teams' set-pieces are holding up well.

Wales have won all nine of their lineouts and all three of their scrums.

Japan have conceded more penalties (6-5), made more handling errors (5-3) and missed more tackles (6-3) which Wales will look to better capitalise on in the second half.

It is not even 11.30am yet but it has already been a dramatic day of WXV internationals.

Earlier this morning, Canada made it successive wins over England with a 31-22 victory in Ottawa, and New Zealand overcame France 31-12.

Later today, South Africa host Ireland (14:00 BST) and USA and Ireland round-off the action tonight (21:15 BST) in Nashville.

Elinor Snowsill
Former Wales fly-half on BBC Radio Wales

Wales really needed that try before half time, there are still some concerns but at least they've given themselves a seven point buffer.

The coaches will be speaking about their discipline, they've got to get back on the right side for the ref, Kate Williams and Alex Callender have to try and talk to her.