‘Improvement across the board’ is the goal for Wayne Pivac and his Wales players

Wayne Pivac wants to see “an improvement across the board” when Wales face a crunch Guinness Six Nations clash against Scotland on Saturday.

Wales have not started a Six Nations campaign with successive defeats since 2007, and they must beat Scotland to revive any hope of a successful title defence following last weekend’s tame 29-7 loss in Ireland.

Scotland last won in Cardiff 20 years ago, losing eight Six Nations Tests, a World Cup warm-up game and an autumn international during that time.

But they will arrive at the Principality Stadium following a stirring Calcutta Cup victory over England last weekend that confirmed serious Six Nations title credentials.

“It is an improvement across the board, really,” Wales head coach Pivac said, after making four changes of personnel, including a Test debut for 22-year-old Ospreys flanker Jac Morgan.

“The players are very critical of themselves. They are very disappointed after the game last week.

“They are desperate to go out there and show we are a much better team than the display we put on last week. Across the board, everybody in the camp was very disappointed.

“We are at home, we are in front of 75,000 people, and we owe it to ourselves and our public to put on a better display, as simple as that.

“They (Scotland) are a very good side. They have got a number of British and Irish Lions.

“They showed last week (against England) that they fight for every blade of grass, and that is certainly what we have got to be doing on the weekend.

“We have to match that, and then bring some on top of that. It is going to be a very hard-fought game, we know that, and it is a Scotland team coming full of confidence.”

Morgan replaces Ellis Jenkins and lines up at openside flanker in a