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.
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.