Use play icon at top of page to watch BBC One coverage or audio icons for commentary
Scotland resist remarkable comeback to win in Cardiff for first time since 2002
Pierre Schoeman and Duhan van der Merwe (2) tries put visitors 27-0 up
Wales finally score first points through second-half James Botham and Rio Dyer tries
Aaron Wainwright and debutant Alex Mann score to take Wales within one point of visitors
Scotland hold on for win but no bonus point, while Wales finish with two match points
Wales 26-27 Scotland
James Hook
Former Wales fly-half on BBC Radio Wales
Finn Russell didn't need to do that kick, they just needed to keep the ball and their patience and force a penalty out of Wales.
Image source, Getty ImagesWales 26-27 Scotland
Tommy Reffell gets a huge turnover and wins a penalty. Pats on the back. He has been outstanding.
Wales 26-27 Scotland
Scotland have used all their forward replacements so Tuipulotu is having to pack down on the blindside.
Tough times.
Wales 19-27 Scotland
Emyr Lewis
Former Wales flanker on BBC Radio Cymru
This reminds me of that game where Shane Williams scored in the last minute when Wales were 17 points down with five minutes remaining.
Plenty of time remaining then!
Image source, Huw Evans Picture AgencyWales 26-27 Scotland
Cameron Redpath is on as well as Jack Dempsey for Scotland.
Elliot Millar-Mills is on for his debut.
Wales 26-27 Scotland
This is the oldest rivalry of the opening weekend to the Six Nations.
Today marks the 130th meeting between Wales and Scotland dating all the way back to 1883.
The scores so far:
Who would bet on the outcome of this game right now?
Six Nations: James Botham scores first try for Wales
Wales 26-27 Scotland
Wales have scored 26 points in a row in this second half.
You wonder if the demons of Cardiff are returning to haunt Scotland.
Tuipulotu is back on but how costly were those two yellow cards.
Wales 26-27 Scotland
Jonathan Davies
Former Wales international on BBC One
Absolutely incredible I have never seen a game where momentum and control has changed - absolutely ridiculous.
Wales cannot change now they need to keep it going, 11 minutes left keep the tempo going!
Image source, Huw Evans Picture Agency
Alex Mann try, Ioan Lloyd con
'Absolutely ridiculous!' - Alex Mann scores a fourth try for Wales
The flanker has scored on his debut and the Principality Stadium is going bonkers!
There's no other word for it.
Driving lineout and Scotland defence crumbled.
Lloyd adds the conversion and somehow this is a one-point game?!
Wales 19-27 Scotland
Rio Dyer breaks down the left, stepping past tacklers and bouncing off defenders, this open game is suiting him.
Wales win another penalty.
Now what do you do? Kick or go for the corner?
How much do they believe?
Wales 19-27 Scotland
Aaron Wainwright breaks a tackle and the big man is clear.
Then Huw Jones sparks a counter-attack from his own half.
This is breaking open like a seven match!
Wales 19-27 Scotland
Colin Gregor
Former Scotland back on BBC Radio Scotland
Townsend has to go to the bench. He has to do something to shift this momentum. It's been all Wales against 14 Scots.
Wales 19-27 Scotland
This game has just exploded into life.
Wales ave scored three tries in 14 minutes and it's all on.
Scotland, what are you doing?!
Image source, Huw Evans Picture AgencyWales 19-27 Scotland
Jonathan Davies
Former Wales international on BBC One
I tell you what, it has been brilliant this second half.
The introduction of Williams has sparked it.
Wales 19-27 Scotland
John Barclay
Former Scotland captain on BBC One
It's all about discipline. Scotland are the masters of their own downfall here.
They've struggled to get a grip of the game since George Turner's yellow card.
Aaron Wainwright
Six Nations: 'Great driving finish!' - Aaron Wainwright scores for third try for Wales
Oh my... what is going on here!
Elliot Dee takes the tap penalty quickly, the ball comes back and the Dragons number eight Wainwright steps off his left foot and dives between the posts.
Wales 12-27 Scotland
No sooner are Scotland up to full strength than they lose the centre for offside.
To be fair, he paid the price for his team's collapse.
Wales 12-27 Scotland
Wales have a penalty and turn down the chance of three points and kick to the corner.
To be fair, a penalty kick does nothing really.
Wales are going for it, hammering away at the Scottish kline.
Wales 12-27 Scotland
John Barclay
Former Scotland captain on BBC One
It's all about pressure. When momentum goes your way, things become much easier.