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.
Supporters who have purchased tickets and are travelling to the European Rugby Challenge Cup clash with London Irish at the Madejski Stadium on Saturday (kick-off 3pm) are advised that some seating has now been changed for this fixture.
Supporters are advised that we will selling tickets right up until kick-off for the big home European Rugby Challenge Cup clash with London Irish - so don't miss all the action this Saturday at BT Sport Cardiff Arms Park.
Blues Rugby Camps will be back this February to given children right across our region the opportunity to participate in rugby during the holidays - and you can book NOW to avoid any disappointment and get the ideal Christmas gift for the aspiring young rugby player in your life!