League: Roos battle for vacant wing sport

Injury to Billy Slater (above) has forced Darius Boyd's move to fullback leaving the wing position open. Photo / Getty Images

Josh Morris and Jharal Yow Yeh will audition for a wing spot in the Four Nations final when the Kangaroos meet minnows Wales on Sunday.

With Australia's place in the following weekend's decider already safe, coach Tim Sheens named a new-look line-up to meet the winless Welsh at Wrexham, with Daly Cherry-Evans, Corey Parker and Beau Scott all set to make international debuts.

While skipper Darren Lockyer is rested ahead of his career-ending appearance in the final, the match looms as a big test for Morris and Yow Yeh.

They will battle for the wing berth left vacant by the injury to Billy Slater that has forced Darius Boyd's move to fullback.

Morris starts on the left wing with Yow Yeh on the right on Sunday, but Sheens is considering switching certain selection Akuila Uate from right wing to left for the final, depending on who impresses most on Sunday.

"I've mentioned it to both boys, but whether it's left or right I go with, I'm not sure yet," said Sheens.

"I played Akuila on the right to start with against England and then he went to left in the second half.

"Morris plays left centre but started out as a left winger, so I'll experiment with that one and see where we come out."

The Welsh have been gallant, but ultimately outclassed by England and New Zealand in their first two games.

Sheens gave his players three days off this week, with a place in the final against England or New Zealand secured.

However, the veteran coach admits maintaining the players' focus was always likely to be a concern this week and he's looking to the newcomers in the team to help maintain intensity ahead of the title decider.

"The enthusiasm of the younger ones picked up today's training. That was good," said Sheens.

A Wales win would be one of the biggest shocks in the history of sport.

Although the coach won't contemplate the idea of defeat, he does fear any drop off could set the team back going into the final at Leeds.

"We have to be careful we don't go and drop our attitude," he said.

"We fired up to play New Zealand and then again for the England game so we have to maintain our enthusiasm.

"I've noticed New Zealand and England kicked away to a start against Wales, and then cruised for a bit before they got hold of the game.

"We want to be more clinical than that."

Sheens has named David Shillington and Keith Galloway as his starting front-rowers, with Cameron Smith to skipper the side from hooker.

Scott and Luke Lewis make up the second row, with Parker, at the age of 29, making his international bow at lock.

Sheens confirmed Cooper Cronk would play the full 80 minutes, maximising his skills as a utility.

"I want Cooper to get some game time," he said.

"He'll start at five-eighth. Then move to hooker to give Cam a break.

"I'll then move Thurston to five-eighth to give Daly a run. Then return Cronk to halfback to give JT a rest."

Team: Darius Boyd, Jharal Yow Yeh, Greg Inglis, Chris Lawrence, Josh Morris, Cooper Cronk, Johnathan Thurston, David Shillington, Cameron Smith (capt), Keith Galloway, Beau Scott, Luke Lewis, Corey Parker.

Interchange: Paul Gallen, Daly Cherry-Evans, Matt Scott, Anthony Watmough, Sam Thaiday, Akuila Uate (two to be omitted).

- AAP