Ben Blair will play no part in the remaining Heineken Cup Pool matches after he suffered a broken hand in a Magners League defeat to the Ospreys on New Years Day.
Cardiff Blues have confirmed Blair has a very small fracture in a bone in his right hand, which has been put in a cast to protect it.
Blair will see a hand specialist on Monday and it is thought that the injury could keep him out of action for up to four weeks.
The New Zealand international fractured the 4th metacarpal bone in the match against the Ospreys on New Year's Eve and his hand is now healing in a splint.
This means the the goal kicking Kiwi will miss the crucial match with Gloucester at the end of the month.
The Blues may have a 100 per cent record in Pool 6, but with Gloucester also performing well, the Kingsholm tussle is likely to be a Pool decider, and the Blues know only too well the cost of coming second in the group stage.
Failure to progress in first place last season meant a trip to Toulouse in the quarter-finals of Europe toughest club competition. The result went the way of the three-times champions and now, Blues boss Dai Young must wait on medical results to see if his goal-kicking full back can help his side into the final eight.
Blair walked off midway through the first half with an ice bag on his hand during his side's 16-12 defeat to their regional neighbours.
Meanwhile, Martyn Williams, the Wales and Lions flanker, was another to leave the field clutching his shoulder, but he is expected to be fit.
"Martyn has struggled throughout the Autumn Test series with a shoulder injury," said Young.
"We rested him for two weeks and he just took another bang on it. There is nothing which needs an operation and nothing to be worried about there."
Penallta are hoping to go one step further than last season when falling to Bedlinog in the WRU Plate Final. After a titanic struggle against Nant Conwy, they have given themselves a great chance, after a hard fought 18-13 semi-final victory.
The unique jeopardy of Judgement Day V has been described by stars from Cardiff Blues, Ospreys, Scarlets and Newport Gwent Dragons who will face each other in the annual double-header at Principality Stadium on 15th April.
School club hub officers in schools throughout Wales are enriching lives by helping pupils to engage more with their education, their community and improve their own outlook on life and future prospects by improving confidence and developing skills such as leadership.
WRU chief executive Martyn Phillips, WRU chairman Gareth Davies and Dragons chief executive Stuart Davies discuss the historic intentions of the governing body to assume operational control of the Newport Gwent Dragons, with a targeted completion date of 1st July.
Equal access to facilities and resources at St Helen's has seen Swansea Women flourish since being welcomed with open arms last July. Swansea RFC chairman Stephen Hughes and women's captain Siwan Lillicrap are delighted to see rapid progress being made on and off the pitch.
Young referee Ben Breakspear is making rapid strides as a referee. In just over a year he has gone from officiating a college game to being a touchline official during last weekend's RBS 6 Nations clash between Wales and Ireland at Principality Stadium.
Grand Slams, Triple Crowns and British and Irish Lions tours - Sir Gareth Edwards did it all. But what are his favourite moments in what was an amazing career? WRU TV finds out - along with his favourite players of today in the third and final instalment of our series with the greatest rugby player ever.
JPR Williams, Gerald Davies and Mervyn Davies were among those in the Welsh ranks when Sir Gareth Edwards began his international career against France nearly 50 years ago, but who was the player who took the young scrum half under their wing?
Wales head coach Rob Howley and captain Alun Wyn Jones are expecting a physical battle against France on Saturday but both are hoping for another impact from the bench as the men in red chase a top-four world ranking.
It's nearly 50 years since the great Sir Gareth Edwards made his debut as a youngster for Wales against France in Stade Colombes. In the first of a series, WRU TV discovers he pocketed a 'special momento' from the game - something he still has today.