The Blues under 18s saw their hopes of reaching the final of the WRU Age Grade Championship all but disappear last night as they went down 27-16 to the Ospreys at the Ely Memorial Ground.
Starting the night in fourth, a point behind the Ospreys, three behind the Dragons and a further seven adrift of the Scarlets, the Blues knew that nothing less than a victory would suffice.
But despite leading for much of the first ha;f, they lost their way in the final quarter and saw the Ospreys steal a significant march in the race for a place in the final at St Helens in January.
A penalty from Diggy Bird gave the Blues an early lead, but Gareth Harvey's converted try edged the Ospreys ahead after 12 minutes.
A second penalty from Bird and a converted try from Tom Rowlands put the Blues back in control at 13-7 and they led 16-14 10 minutes into the second half after Bird responded with a penalty to the Ospreys' second try, this time from Sam Hughes.
After that, however, the Ospreys showed their determination and drive and after Chris Banfield's converted try had given the visitors the lead, Tom Prydie added a brace of penalties to make sure.
The game between the Dragons and Scarlets, due to be played last night at Newbridge, was postponed due to the weather. A date for the replay will be announced shortly.
Cardiff Blues face Newport Gwent Dragons in a huge European Rugby Challenge Cup quarter-final on Saturday, April 4 - and you can celebrate pre and post-match with Cardiff Blues and the Cardiff Blues Supporters' Club at BT Sport Cardiff Arms Park!
Welsh Pro Rugby's main sponsor BT Sport will help make it a Welsh derby day to remember for thousands of rugby supporters at the big European quarter-final with the creation of a buzzing Family Village at Rodney Parade.
Cardiff Blues are hosting a special Open Evening this Wednesday night at BT Sport Cardiff Arms Park to give prospective students and parents the chance to discover more about our new and exciting rugby education programme.
Our Cardiff Blues Rugby Camps return this Easter to give children right across our region the opportunity to participate in rugby during the holidays - and after selling out our last two camps you can book NOW to avoid any disappointment!
Supporters are being invited to get on their bike and gear up for an epic charity bike ride from Cardiff to Paris this June - with the last few places now available to raise vital funds for #StayStrongForOws
The players at Cardiff Blues will be hoping to play with some true Gallic flair for the rest of the Guinness PRO12 season - after the region teamed up with a successful French bistrot in the Welsh capital.
Cardiff Blues will be celebrating St David's Day when the region faces Edinburgh Rugby at BT Sport Cardiff Arms Park on Sunday afternoon (kick-off 12.45pm) - with hundreds of children invited as part of our Regional Schools Day.
Fine footwear retailer The Brogue Trader - one of the official sponsors of Cardiff Blues - is celebrating after being recognised by the British Footwear Association at its annual Footwear Industry Awards.
Battling Cardiff Blues produced a second half performance packed full of character and spirit to push Ulster Rugby all the way in an absorbing Guinness PRO12 encounter at a packed out Kingspan Stadium.
Argentine ace Joaquin Tuculet scored a sensational try in the eighth minute of injury time as Cardiff Blues produced an astonishing finale to snatch victory over Connacht Rugby after an unbelievable Guinness PRO12 encounter.