Rhys Priestland has backed his Scarlets teammate Tavis Knoyle to justify his selection for Saturday's Test against Argentina.
The duo already link up at half-back for their club and will now play alongside each other at international level after the 22-year-old Knoyle was selected ahead of the experienced Mike Phillips.
And Priestland said: "What's great about Tavis is that he always wants to learn and improve. He has been playing well for the Scarlets and it is great for him to get a chance on Saturday.
"His understanding of the game is getting better all the time, and he shouts at the forwards, which is what you need from a number nine.
"He is one of the fittest players in the squad and he gets to breakdowns quickly. As a 10, all you can ask is that the nine gets the ball away, and he does that well.
"He is a big strong boy, and a lot of people have made comparisons between him and Mike. Hopefully, he will go well on Saturday.
"He is such a well-liked character within the Wales squad and the Scarlets squad. He is a larger-than-life character and everyone feeds off his enthusiasm."
With Dan Biggar and James Hook in good form, Priestland's own selection was not completely certain but the 25-year-old says he tries not to worry about such matters.
"I didn't really think about it," he said. "You do everything you can do and it is not really up to you then.
"You train to do the best you can and try to get into the team but, once selection comes around, there is nothing you can do about it.
"I train as hard as I can, but ultimately the decision is out of your hands, so there is no point in working yourself up over things you can't control.
"The more time I have spent within the squad the more comfortable I have become with the way we want to play. You can't account for every situation in a game, but you learn from it each time."