Matthew Nuthall crossed for Pontypridd but his side were well beaten by Cross Keys
Cross Keys ended Pontypridd's 30-match unbeaten run as they claimed a magnificent 38-17 win at the home of the defending Principality Premiership champions.
The victory moved the inform Keys into fourth place and they will be in confident spirits ahead of their British & Irish Cup away trip to take on Leinster this weekend.
Last year's double winners Pontypridd were 25-8 victors at Carmarthen Quins last Saturday but this time around they were blown out of the water by Keys.
The victory was based on the visitors moving into a healthy 30-5 half time lead. Dan Hodge, Elliot Jones, James Cordy-Reddan and Scott Matthews all crossed for the Keys with Dorian Jones kicking 18 points from the tee.
Matthew Nuthall, Garwyn Smith and Geraint Walsh responded for Pontypridd but there was to be no doubting the winners of this contest.
Dorian Jones opened the scoring for Keys with a snap drop goal and with the home defence under pressure, his side soon crossed for the first try of the day as Hodge finished off an overlap. The conversion was added but Pontypridd hit back with a score from Nuthall.
Keys then replied with a penalty from the inform Dorian Jones but with both sides still well in the game, Pontypridd pressed the self-destruct button. A Dai Flanagan chip ahead was collected by Elliot Jones who ran 40 metres to score with Cordy-Reddan soon adding a quick-fire second after picking up a loose Pontypridd pass.
Dorian Jones converted both scores and dropped a second goal for a comfortable interval advantage.
Needing a second half revival to contest the game, Pontypridd started well with Wales Under 18 centre Smith kicking ahead to score. Numerous replacements followed but the home side's momentum was hit when Craig Locke was yellow carded.
Now with a man advantage, Keys struck for a vital score when a huge shove from their forward pack saw them cross the line, Matthews claiming the score.
Yet another penalty from Dorian Jones pushed Keys further clear and although Pontypridd hit back with a Walsh score, converted by Simon Humberstone, it was not enough to spare them from a heavy defeat.
Ystradgynlais and Ynysddu played out a titanic struggle at Taffs Well in the SSE SWALEC Bowl semi-final. At the end of the game neither team could be separated after a 15-15 stalemate but Ystradgynlais go through on try count.
Wales Under 18 captain Calum Haggett has received a conditional offer to read Biomedical Science at St Anne's College, Oxford. WRU chairman Gareth Davies went to meet Calum and Coleg y Cymoedd Principal Judith Evans to wish him luck in his exams and pass on some of his personal experience.
This week on the Principality Premiership Podcast, WRU TV's Graeme Gillespie talks to Carmarthen Quins head coach Louie Tonkin who is aiming to close the gap on leading duo, Pontypridd and Ebbw Vale, with victory against Bridgend tomorrow.
Christmas has come early at Glynneath rugby club, one of a number around Wales who have received an array of merchandise and equipment this December courtesy of the Welsh Rugby Union's £750,000 participation points scheme.
The WRU have been delivering on the scheme - which gives individual clubs access to up to £5,000 worth of supplies and equipment each for the 2014/2015 season - over the last two weeks and today (Friday) were received by a special guest in Glynneath, club president and pitch marker Max Boyce.
Bedwas ran in five first half tries as they put Neath to the sword with a 43-15 victory and in doing so earned a final position of fifth in the Welsh Premiership, Cardiff's one extra win earning them the fourth spot despite Bedwas's better points difference.
A look ahead to Judgement Day and back at youth finals day in the Principality Welsh Rugby Union Podcast. We hear from Andrew Coombs, Jake Ball, James Davies, Dan Lydiate and Josh Navidi. We also speak to Wattstown, Ystradgynlais, Rhydfelin, Pontypool United, Penallta and Pontypridd youth coaches at finals day at the Millennium Stadium.