Blackwood are the new leaders of SWALEC Division One East after a comprehensive 43-13 win away at the students of UWIC.
Brothers David and Trevor James got two of the away side's five tries with Mark Birkby, Gareth Busby-Davies and Gareth Price, who also claimed 20 points from the boot, completing the rout.
They climb to the top at the expense of faltering Newbridge who slipped to a shock 32-24 defeat against bottom side Newport Saracens.
Two tries from Nathan Powell and one from wing Wesley Cunliff had helped the Saracens to a 22-10 half-time lead.
Newbridge came back stronger in the second-half with tries from Richard Powell and Gary Wilks but a second try from
Powell, sealed a surprise win to lift Newport off the bottom of the table.
Penalta are now the new side at the bottom of Division One East after a narrow 22-28 defeat to Llanharan.
In the remaining game of the day in Division One East Ystrad Rhonnda took a big step towards the safety of mid-table with an emphatic 41-8 win away at Bargoed.
Tredegar stay top of Division Two East after their 20-13 win against Bedlinog. Dafydd James and David Ford got the tries.
Abergavenny were the big scorers of the day in Division Two East as they ran in four tries to demolish Abergavenny 29-15.
Pill Harriers are chasing down the leaders in Division Three East, as they romped to a 37-5 win over Pontypool United, with two tries from Leighton Burrow.
Strugglers Abertillery pulled off the shock of the day beating high-flyers Croesyceiliog 29-5. With neither of the top two playing third-placed St Peters took full advantage in Division Three South East with a 24-6 win over Penarth.
Monmouth were the big scorers in Division Four East as they trounced Chepstow 30-10, and Heol Y Cyw maintained their stranglehold on Division Four South East with a narrow 13-8 win against Llantwit Major.
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.