In the North, Caernarfon ran in nine tries in their 59-0 home win over Llandudno to make it business as usual.
Caernarfon won the Division 1 North title by a clear 20 points in 2010/11, losing only one of their 18 games.
Newly promoted Bala notched a notable home win with a 20-17 defeat of Ruthin, outscoring them three tries to one, while Bro Ffestiniog marked their first competitive game as a full member of the WRU with a 23-3 home triumph over Llangefni.
Steve Lay, Tom James and Aaron Roberts grabbed the home tries, while all the points for the visitors came from Iwan Davies with a try, conversion and two penalties. The game was held up for 10 minutes in the second half when visiting hooker Iwan Evans susptained a suspected broken ankle.
Nant Conwy were another club with something to celebrate as they beat Mold 24-3 shortly after officially opening their new clubhouse. The home side were 14-0 ahead at half-time and added a third try after the break to complete a comprehensive victory.
There were no points in the first half at Pwllheli where Bethesda went ahead through a Mathew Parry penalty early in the second half. But the home side's response came through their powerful pack and a pushover try and conversion on the hour earned them the points.
In Division 2, Colwyn Bay picked up a bonus point in their 30-9 home win over Newtown, while Rhyl ran in five tries in their 36-6 triumph at Denbigh.
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.