The Blues put one over on the Ospreys in last night's penultimate pool game in the WRU Regional under 18 Championship at Jenner Park in Barry.
However, their 25-22 success in front of a record attendance for the competition - 1300 - does not affect the overall standings in the table.
In fact with the two sides having performed so well in the opening three months of the season, they will meet once again at the end of next month in the final at Llandovery.
With that game in mind, the Blues were understandably keen to strike a physcological blow. And they achieved that courtesy of tries from captain Jake Thomas, Christian Dacey and Lloyd Williams and three conversions and a long range penalty from Joe Deacon.
They led 15-12 at the interval with high performance manager Gafyn Cooper delighted with another excellent performance.
He said, "It was another great night for the boys. The staging of the game could not have been better and the crowd was far and away the biggest we have played in front us.
"They are a good side and made life really difficult for us, but we held on and Joe Deacon's penalty from half way earned us an excellent win."
In the other game, the Dragons recorded a 34-10 win over the Scarlets at Abertillery Park.
Existing Season Ticket holders are advised that full details of all packages for the 2015/16 season have now been posted out to you and will arrive in the coming days - and that the deadline to renew your seat has now been extended!
Supporters are advised that Cardiff Blues will be holding a presentation on the field post match on Saturday afternoon to mark those players leaving the region, hand out caps and the end of season awards.
Cardiff Blues face Zebre in the last Guinness PRO12 game of the season at BT Sport Cardiff Arms Park this Saturday, (kick-off 3pm) - and the ladies of the region can meet players such as Cory Allen and Ellis Jenkins while enjoying a special day with the Blues!
First team stars Cory Allen, Ellis Jenkins, Adam Jones and Kristian Dacey were among the special guests as Cardiff Blues held the Sphere Solutions Blues Tag Rugby Festival at BT Sport Cardiff Arms Park.
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.