|RBS Six Nations: Scotland v Wales|
|Venue: Murrayfield, Edinburgh Date: Sunday, 15 February Kick-off: 15:00 GMT Coverage: Live on BBC TV, HD, Red Button, Radio 5 live, BBC Radio Wales, Radio Cymru, the BBC Sport website, BBC iPlayer, S4C online, mobile, the BBC Sport app and Connected TV; text commentary on the BBC Sport website.|
Liam Williams deserves to start for Wales against Scotland, according to former Welsh rugby union and league international Jonathan Davies.
Scarlets full-back Williams is the only change to the side that lost the Six Nations opener 21-16 to England.
He replaces George North on the wing, who has been given an "extended recovery period" after suffering two blows to the head in the defeat.
"Liam Williams has played very well and deserves a spot," said Davies.
North is not happy to miss the match according to Wales head coach Warren Gatland, who said the change was made with the Northampton winger's welfare in mind.
Williams, 24, made his 19th appearance for Wales as a replacement in the England defeat.
He came on for eight minutes of the first half while North was off the field being assessed for concussion, following the first of two blows to the head.
Wales led 16-8 at half-time against Stuart Lancaster's side before conceding 13 unanswered points after the break.
Despite the nature of the defeat, Davies is not surprised Williams is the only change Gatland has made.
|Wales in the 2015 Six Nations|
|Friday, 6 February: Wales 16-21 England|
|Sunday, 15 February: v Scotland, Murrayfield|
|Saturday, 28 February:v France, Paris|
|Saturday, 14 March: v Ireland, Cardiff|
|Saturday, 21 March: v Italy, Rome|
"We always say when things don't go well, changes should be made, but as Warren Gatland has said in the past, we haven't got the strength in depth of other countries," said Davies.
"Who exactly could you put in?
"The people that are knocking on the door are Scott Williams, [Justin] Tipuric and Paul James, who are all on the bench.
"So there are not many outstanding candidates from outside of that squad, so it's difficult to make wholesale changes when you've not got the depth.
"You have to just give the players another opportunity to right the wrongs."
Wales have not lost to Scotland since 2007 and, after full-back Stuart Hogg was sent off in the 22nd minute of their final 2014 tournament game, Gatland's side hammered them 51-3 in Cardiff.
That gave Wales a record seventh consecutive win against the nation now coached by New Zealander Vern Cotter.
Davies was impressed by Scotland despite their 15-8 loss in Paris against France in their Six Nations opener.
He said Wales will have to be at their best to get off the mark in this year's tournament.
"Scotland played extremely well [in France]," said Scrum V pundit Davies.
"They are playing with a lot of confidence. Under Vern Cotter they've got a solid defence system that's going to be difficult to break down and we know with Wales if we don't play well and we don't get over that gain line, we do struggle to perform.
"I think it's going to be a very tough match, one of the toughest matches up in Scotland for a number of years because they've improved.
"I think we start as slight favourites, but if we don't play to the best of our ability, it's one that we will lose."