The league leaders were unbeaten after seven games in the Principality Building Society Premiership and were looking to become the first side to win at Newport for more than two years. But Daniel Griffiths was the hero for the Black and Ambers with a 17-point haul including a conversion of Matthew Thomas's try in the 22-10 win. Geraint John scored Bridgend's try.
That allowed the chasing pack to wipe out the Ravens three-point lead at the top of the table.
Neath hammered Pontypool 31-5 with promising prop Cai Griffiths scoring the last of their four tries.
Dafydd Lockyear and Wayne Evans both crossed twice at Pontypridd hit Carmarthen Quins for six in their 40-20 win at Sardis Road.
Aberavon's Jamie Davies kicked 18 points in their emphatic 43-15 win over Ebbw Vale.
Llanelli edged out rivals Cardiff 15-7 at Stradey Park.
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.