Blackwood continued their march towards the Division One East title after increasing their lead to seven points with an eight-try rout over Penallta.
The Caerphilly-based club held a two-point advantage at the top of the table with two games in hand but extended the margin over nearest rivals Newbridge who had the weekend off.
Two tries each from wing Kristian Perry, centre Gareth Price and scrum-half Rhys Hallet together with scores from number eight Dean Gibb and Trevor James allowed Blackwood to canter home 54-15.
Third-placed Merthyr suffered a setback with a 41-26 defeat at Llanharan as doubles from wing Lee Thorne and centre Lloyd Thomas did the damage in the six-try victory.
Bargoed gained ground on the leaders by clinching a 30-3 bonus-point win at Rumney.
Brothers Darren and Rhys Humphries crossed while tries from Mike Roberts and Lee Pearson gained the extra point to seal a convincing victory.
Carmarthen Quins look certainties to be crowned Division One West champions after their 42-17 demolition of second-placed Narberth.
Jason Harris bagged two of the away side's five tries to put them 22 points clear at the top.
The only sour point for the runaway leaders was the red card of Martin Morgan for a striking an opponent on 63 minutes.
The result enabled Tonmawr to leap into second thanks to their 27-14 win over Carmarthen Athletic.
Nigel Francis guided the visitors with a seocnd-half try in a 17-point tally to complement tries from Gareth John and Will Price.
A Tom Brooks try handed Bonymaen a decisive 10-8 home win over fellow strugglers Cwmllynfell who grabbed a consolation score through Alan Stere.
And in the remaining game a late Ellis Phillips try helped Llangennech - in another low-scoring contest - on their way to a 10-3 victory over Maesteg.
Wales Head Coach Rob Howley talks to WRU TV's Sebastian Barrett about the 36-man squad he has just named for the forthcoming Under Armour series, which includes two uncapped players, Ospreys duo Sam Davies and Rory Thornton.
Head coach Rowland Phillips is deligthed he can now call BT Sport Cardiff Arms Park home for his Wales Women's side, who launch their international season next month with games against Scotland and UK Armed Forces in the heart of the capital city.
Wales Sevens star Sam Cross has put his home town club of Brynmawr on the map after winning a silver medal at the Rio Olympics with Team GB. His club have now honoured him by naming their players bar after him, as WRU TV discovered at the official launch, recently.
One of the newest members of the Principality Premiership, Bargoed admit it's proving to be a steep learning curve at the highest level, but are determined to become a force to be reckoned with. WRU TV visited the club last weekend when they took on Llanelli.
Table-topping Aberavon travel to north Wales to tackle RGC 1404 as both teams defend unbeaten starts to the season in the Principality Premiership. WRU TV's Graeme Gillespie visited the Wizards to see how their preparations were going for the game of the weekend.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
Both Bargoed and Swansea were seeking their first win of the Principality Premiership season this afternoon. It proved a fruitful day for the hosts - not only did they win, but Bargoed claimed a try bonus point.
Cardiff managed to keep their unbeaten record at home intact, but only just as Bridgend made them work extremely hard before the Blue and Blacks secured a hard fought Principality Premiership win at the BT Sport Arms Park last night.
Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.