While most eyes in Wales were on the heroics from the national side in Cardiff, the Dragons were defeated by defending champion Leinster, in the Magners League.
But it was far from plain sailing for the the Dublin side, who had to fight theri way back from 13-3 down with second tries from Bernard Jackman and Rocky Elsom.
Replacement fly-half David Holwell, who has rejoined Leinster on a temporary contract, chipped in with a late penalty, as did centre Fergus McFadden who did his prospects no end of good with an impressive display.
But the match began with the visitors adapting well to the wintry conditions, and the Dragons were quickly 6-0 ahead thanks to two James Arlidge penalties.
With Jonathan Sexton receiving medical attention, McFadden booted the hosts' first points after 19 minutes, but the Dragons pulled ten points clear when second row Hoani MacDonald grabbed an intercept try.
The Junior All Black swooped on a loose pass from Sexton to gallop over close to the posts, just after Arlidge had missed a penalty.
Leinster responded almost immediately with flanker Sean O'Brien coming in on a great angle into the Dragons' 22 and he handed off Arlidge to complete a fine individual score.
Sexton converted and while the Dragons lost MacDonald to the sin-bin for his hauling down of Devin Toner at a lineout, their lead still stood at 13-10 at the break.
With better continuity and a solid platform up front, Leinster began to turn the screw in the third quarter.
Sexton levelled matters with a well-struck penalty and after repeated darts at the Dragons line, hooker Jackman put Leinster out of their misery by scoring on the hour mark.
The try went unconverted as Sexton's conversion bounced off the left hand post and had Arlidge bisected the uprights soon after at the other end, the pressure would have mounted on Leinster.
As it was, the hosts had enough class on show to see out a win which moves them up to fourth in the table.
Holwell kicked the second of his two penalty attempts, McFadden also landed a penalty and then, in injury-time, after a fantastic raid forward from Girvan Dempsey, Holwell showed great hands to send Elsom tearing over at the right corner to add some gloss to the scoreline.
And although Leinster managed to recover from an early 13-3 deficit, the night was somewhat soured by a shoulder injury to Brian O'Driscoll.
With ten players currently out injured, Michael Cheika can ill-afford to lose a player of O'Driscoll's calibre.
Penallta are hoping to go one step further than last season when falling to Bedlinog in the WRU Plate Final. After a titanic struggle against Nant Conwy, they have given themselves a great chance, after a hard fought 18-13 semi-final victory.
The unique jeopardy of Judgement Day V has been described by stars from Cardiff Blues, Ospreys, Scarlets and Newport Gwent Dragons who will face each other in the annual double-header at Principality Stadium on 15th April.
School club hub officers in schools throughout Wales are enriching lives by helping pupils to engage more with their education, their community and improve their own outlook on life and future prospects by improving confidence and developing skills such as leadership.
WRU chief executive Martyn Phillips, WRU chairman Gareth Davies and Dragons chief executive Stuart Davies discuss the historic intentions of the governing body to assume operational control of the Newport Gwent Dragons, with a targeted completion date of 1st July.
Equal access to facilities and resources at St Helen's has seen Swansea Women flourish since being welcomed with open arms last July. Swansea RFC chairman Stephen Hughes and women's captain Siwan Lillicrap are delighted to see rapid progress being made on and off the pitch.
Young referee Ben Breakspear is making rapid strides as a referee. In just over a year he has gone from officiating a college game to being a touchline official during last weekend's RBS 6 Nations clash between Wales and Ireland at Principality Stadium.
Grand Slams, Triple Crowns and British and Irish Lions tours - Sir Gareth Edwards did it all. But what are his favourite moments in what was an amazing career? WRU TV finds out - along with his favourite players of today in the third and final instalment of our series with the greatest rugby player ever.
JPR Williams, Gerald Davies and Mervyn Davies were among those in the Welsh ranks when Sir Gareth Edwards began his international career against France nearly 50 years ago, but who was the player who took the young scrum half under their wing?
Wales head coach Rob Howley and captain Alun Wyn Jones are expecting a physical battle against France on Saturday but both are hoping for another impact from the bench as the men in red chase a top-four world ranking.
It's nearly 50 years since the great Sir Gareth Edwards made his debut as a youngster for Wales against France in Stade Colombes. In the first of a series, WRU TV discovers he pocketed a 'special momento' from the game - something he still has today.