Vidfeo referee is looking at this one.

Henderson jumped into Liam Williams after he kicked - flooring the Wales full-back.

Was it deliberate?

Donncha O'Callaghan
Former Ireland lock on BBC One

Absolutely brilliant from Liam Williams.

That's the last action for Tipuric, who is replaced by Leicester's Tommy Reffell.

Cardiff prop Rhys Carre is also on for Gareth Thomas.

Ireland's Iain Henderson is also on at lock.

Another Wales chance goes begging.

Liam Williams makes a brilliant break, stepping past the first Ireland tackler and between two more.

Justin Tipuric is up in support - as ever - but his pass to Rio Dyer was too high for the little wing and the ball goes into touch.

Wales have had chances.

Tom Shanklin
Former Wales international on BBC Radio 5 Sports Extra

Wales will have to make changes soon because they're 17 points behind, they have to change things up at some point.

Jonathan Davies
Former Wales international on BBC One

Straight away you score a try, you get a penalty, you get right in the game after only five minutes of the half.

All of a sudden a line-out doesn't go straight, then you concede a penalty at the scrum to put Ireland back on the attack.

Caelan Doris is getting all the pats on the back.

He wrapped up Justin Tipuric just short of the Irish line and wins a scrum.

Doris was the leading ball carrier in the first half, but the big Leinster number eight is proving just as effective without the ball.

Another attacking line-out for Wales.

What can they do this time?

I wondered how long it would take before the strains of Delilah rang out - and they've just started.

Choirs have been banned from singing the Tom Jones classic at the Principality Stadium because of the references to domestic violence.

But it hasn't proved a popular decision with many Welsh fans.

Tom Shanklin
Former Wales international on BBC Radio 5 Sports Extra

Brilliant play! Putting George North into the line-out!

That allowed Wales to catch it and gain possession, then it was carry after carry after carry, it shortened down the Ireland defence and then a nice little blind play.

Oh what a shame.

Wales had a penalty on the half-way line after Andrew Porter's late tackle on Liam Williams.

The crowd was bouncing at last but Ken Owens is pinged for not throwing straight. Talk about a momentum killer!

Jonathan Davies
Former Wales international on BBC One

That's a great move by Wales, kept their composure and that's an easy run in for Liam Williams.

Penalty to Wales in front of the posts but they kick for the corner.

Vital they get the first score of this second half, you feel.

Jonathan Davies
Former Wales international on BBC One

That is a real rib tickler. Good tackle that is.

Would have loved to have been in the Wales changing room at half-time.

Wonder what Gatland said after that 40 minutes!

Ouch! Dan Biggar felt that!!

Garry Ringrose lined up the Wales fly-half and smashed him into the ground.

Dennis Hickie
Former Irish winger on BBC Radio 5 Live

My concern coming into the game off was what impact would the withdrawal of Jamison Gibson-Park have, but Conor Murray has had a fine game and Ireland have managed to keep the tempo up.

My other concern was Tadhg Furlong pulling out at the start of the week, Finlay Bealham coming in.

Furlong plays such a pivotal role. If Wales were going to get nothing else out of the short preparation time that Warren Gatland had, I really thought they were going to go for the Irish scrum more.

But Ireland's scrums so far far have been very good.

Early entry for the Cardiff prop who hasn't long come back from injury himself.

This could be the biggest half-time deficit Wales have faced, especially in Cardiff.

Back in 2013, Ireland led 23-3 at the break and scored early in the second to lead 30-3.

Wales managed to mount a comeback then... can they do it again?