The Ospreys under 16s booked their place in the final of the WRU Age Grade Championship courtesy of a bonus point victory over Blues North at Llandarcy.
Meanwhile it was heartache for Blues South who missed out on a place against the Scarlets although they won, again, at Tredegar, 19-15 against the Dragons.
A Gerin Eldred try for the Dragons left the South trailing 5-0 at the interval; but a rousing second half performance saw the visitors home, if only just.
James Benjamin bagged a second try for the Dragons with Ethan Davies converting and adding a penalty for good measure. However, when the South discovered the level of control that had taken them into contention going into the game, they crossed for the only time through prolific scorer Osian Davies.
Gareth Thompson, the side's leading scorer this season, converted the try and made sure that the South were at least in with a chance of reaching the last two, with three penalties and a drop goal.
John Richards, team manager at the Blues South, said; "We gave it our best shot and can be pleased with our effort this season.
"To the credit of the Dragons, they might not have had a place in the final to play for, but the threw everything at us. It was a strong game and very enjoyable."
Meanwhile the Ospreys booked their place in the final with coach David Jones' side running out comfortable 35-3 winners over Blues North.
Lewis Montague gave the North an early lead with a penalty before the Ospreys cut loose and scored five tries, including two from the second row Dewi Parry.
His first helped the hosts into a 7-3 interval lead and after crossing for a second 10 minutes into the second half, the Ospreys made sure of maximum spoils with further tries from Matthew Jenkins, Evan Yardley and Sam M Davies.
Outside half Sam Davies kicked five conversions to put the icing on a fine team performance.
The Scarlets, who went into their final game against the Dragons with a 100 per cent record, almost came unstuck as the visitors produced an outstanding display at Parc y Scarlets.
The Dragons dominated the first half and turned around six points to the good courtesy of two penalties.
After the interval, the Dragons maintained the intensity level, but ill discipline started to creep into their game. The Scarlets closed the gap with a try from scrum half Gareth George with Jordan Williams, who had already kicked a penalty, converting.
The Dragons again struck with a brace of penalties and an unconverted try, but the Scarlets made sure of a 17-17 draw thanks to a late try from Daniel Thomas that Williams converted from wide out.
The Under 16 Regional Championship final between the Ospreys and the Scarlets will take place at St Helens, Swansea at 7.15 on Wednesday 10 February. Tickets are £3 for adults, free entry for Under 16s. Spectators are kindly requested to enter St Helens via Bryn Road.
Roger Lewis talks to WRU TV at the announcement of a new £60 million Rugby Services Agreement (RSA) which provides a new and positive contractual relationship between the WRU and its four Regions for the next six years has been agreed.
The Welsh Rugby Union has announced a major new sponsorship deal with Gullivers Sports Travel which will make the UK's leading, and longest established, multi-sport tour operator, an Official Supplier for the rest of the decade.
Having taken part in seven World Cups as a player and coach, Liza Burgess hopes to go out in style this afternoon when Wales take on Australia in the Play-off for seventh and eighth place in the Women's Rugby World Cup in Paris.
WRU Head of Rugby Josh Lewsey met with volunteers across the game earlier this week, championing their role in the sport. He was joined by Wales captain Sam Warburton for part of the day as volunteers took part in a 'Try Out' event for the 2015 Rugby World Cup
Wales Women may not have got the results they wanted recently on the field, but off it they have made massive strides in strength and conditioning - and that is in no small part due to S&C coach Sam Dodge.
Two weeks into the new pitch project at Millennium Stadium, Groundman Craig Campbell takes staff on a unique behind-the-scene tour of the works so far and National Squad Assistant Strength and Conditioning Coach John Ashby and Tour Guide Peter Owen describe what the revamp means for them.
Try-scorer Jenny Davies and fellow prop Megan York reveal to WRU TV's Graeme Gillespie their thoughts after Wales broke their drought in the Women's Rugby World Cup with a 35-3 win over South Africa in Paris.