WILLIS Halaholo's fast feet earned a Wales call-up at the expense of Jamie Roberts' power.

The Cardiff Blues centre is set to win his first cap off the bench in the Six Nations clash at Murrayfield on Saturday.

The 30-year-old was called up after injuries to Johnny Williams, George North and Jonathan Davies.

He will back up starting centres Nick Tompkins and Owen Watkin in Edinburgh.

There have been calls for Roberts to return to the Test stage after the 34-year-old former Wales and Lion star's excellent start to life as a Dragon.

Head coach Wayne Pivac instead opted for the more elusive Halaholo, and revealed he had spoken to Roberts about the decision.

CLASSY: Willis Halaholo will make his Wales debut in Scotland

CLASSY: Willis Halaholo will make his Wales debut in Scotland

"We go through loads and loads of stats and look at a lot of footage," said Pivac.

"We look at the skill sets and the way that we want to play the game and Willis is at the top of the tree.

"Jamie has a power game and funnily enough Willis is by far the best in the collision area because of his footwork. He beats defenders and gets over the gain line.

"That's what we are looking to utilise, and also his offloading game.

"We haven't been ruthless on the edges when we have created opportunities and he is very good in that department, straightening up the attack and putting people into space.

"We think that's what we need at the moment after we had a good long chat around Jamie.

"I've been in touch with Jamie - he contacted me and I contacted him back. We've had a discussion and he knows exactly where he sits if we need his services."