Gareth Baber has challenged Simon Humberstone to seize his opportunity at Cardiff Blues.
The 26-year-old Pontypridd fly-half made his regional debut against Worcester Warriors in the LV=Cup last weekend and is poised to have another chance against the Ospreys on Friday.
Rhys Patchell has been ruled out of the clash with a shoulder injury, while Gareth Davies is rated 50-50 after suffering a groin strain.
That leaves semi-professional Humberstone as the only fit fly-half candidate training with the Blues and Baber reckons the former UWIC star is playing for a full-time future.
"Rhys has a bit of a problem with his shoulder and Gareth picked up a slight strain last week," said Baber.
"Gareth is only a slight strain it's just a question of whether he will win the fitness race for this weekend. It's not as bad as first thought - there has been better news over the last few days.
"But we have Simon Humberstone who performed well and has impressed us enormously since he has come in - a lad who has being playing in Pontypridd but taken a step up here.
"He is quite capable of holding a position here and it's up to him. He's been given an opportunity and he needs to put in performances.
"When you're a young fella and are given an opportunity like this you have to get in and take it. This could be the opportunity he has been waiting for. He has an opportunity to get a contract."
And Baber expects a full-blooded Welsh derby at the Liberty Stadium, despite the lack of stars due to international duty.
"It's a local derby; it will be physical and are planning around how they play the game," said Baber.
"There will be energy, edge, two teams that know each other well and a lot of competition between the group. A lot of the boys would have played each other through the age-grades and they know each other well. We're hoping for a good crack at them on the weekend."
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This week on the Pick and Go Podcast, WRU TV's Graeme Gillespie is joined by South Wales Argus rugby writer Chris Kirwan to preview this weekend's Principality Premiership action. Aberavon winger Steffan Andrews also makes an appearance.
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This week in the Principality Premiership, all roads lead to the new pitch at Sardis Road where Pontypridd take on Merthyr in the most highly anticipated game of the season. WRU TV's Graeme Gillespie previews the big clash, along with all the other Premiership games this weekend, with guest Ioan Dyer.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
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Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.
In the first 'Pick and Go' podcast of the season, WRU TV looks ahead to the Principality Premiership. We chat to WRU Head of Performance Geraint John, Carmarthen Quins head coach Richard Kelly, Merthyr's head coach Lee Jarvis and get the opinions of journalists Chris Kirwan and Ioan Dyer as the new season prepares to kick off this weekend.
RGC 1404's new head coach Mark Jones is hoping to build 'something special' in north Wales and is already looking forward to the development region participating in the Principality Premiership for the very first time.
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The WRU signed TV comedian Rhod Gilbert up to a 'Coaching Children Level 1' course before letting him loose on an U8s side at Whitland Junior Borderers - we went behind the scenes to film the making of 'Rhod Gilbert's Work Experience' see the results here.