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 travel to Myreside on Friday to take on Edinburgh Rugby in a crucial Guinness PRO12 clash, and with Wales facing Scotland in the RBS 6 Nations at BT Murrayfield on Saturday, it promises to be a weekend of non-stop rugby action at the Scottish capital. Here are some useful advice to Cardiff Blues travelling supporters.
To celebrate the opening of the newly refurbished Guinness PRO12 Pack Bar, the world famous Irish brewer will be offering supporters free pints of the black stuff ahead of Saturday's clash with Ulster.
'TACKLE' - the first-ever joint community rugby initiative between the four professional teams in Wales has been launched (today Weds 19th October) bringing an inspiring new rugby education programme to young people in Communities First areas. Partners in the project were joined by Wales' star rugby internationals Sam Warburton (Cardiff Blues), Alun Wyn Jones (Ospreys), Gareth Davies (Scarlets) and Hallam Amos (Newport Gwent Dragons), for the launch at Aberdare Community School.
A last minute Jarrod Evans penalty ensured Cardiff Blues Premiership Select finished their British and Irish Cup campaign on a high, with a 24-21 victory over London Scottish at Athletic Ground on Friday.