The Ospreys will take on Blues North in the final of the WRU Reebok Regional under 16 Championship final next Wednesday (5 March, 7.15pm, Sardis Road) after putting one over on the table topping Blues this week.
Needing a victory of any sort to pip the Scarlets to a place in next week's final at Sardis Road, the Ospreys ran out 29-15 winners, thanks to four tries.
The North, who had already booked their place in the final, scored tries through flanker Openside Thomas Young, wing Owain Williams and flanker Jack Gibbon crossed for tries for the Blues, whilst for the Ospreys there were four tries - from wing Bowdy Davies (2), Ben Davies and replacement Kyle Blackmore.
Tom Prydie with two conversions and Davies with one, wound up proceedings with team manager Graham Court saying; "we are delighted to have made it through to the final, now we have to repeat this performance.
"If the game is half as good as this one, it will be worth watching."
Blues high performance manager Gafyn Cooper said, "It is great for this side to have achieved what they have this seasopn, but they need to finish off the campaign with one final victory."
In its sixth year the Blues Cup once again showed to be huge hit throughout the region and is a great advert for the community game as each of the six finalists across the three age groups produced rugby of an outstanding level resulting in 14 tries.
Cardiff Blues are going green this season after launching a new European shirt with an environmental pledge - and now sponsors Wessex Garages are making sure the region is on the right road to deliver on our green promise!
Inspired Cardiff Blues enjoyed Judgement Day at the Millennium Stadium as they secured a tense 17-13 win over regional rivals Scarlets in a feisty and enthralling encounter in the RaboDirect PRO12 on Easter Sunday.