Loughor are within a point of Division Two West leaders Builth Wells after they beat Bridgend Athletic
With Builth Wells' trip to Cwmavon being postponed, the second and third placed clubs had the chance to play their game in hand at Villa Field.
Hosts Loughor ran out 15-13 winners, but needed a late penalty to do so. Ospreys academy centre Ben John put the winning kick over on 75 minutes.
Elsewhere BP Llandarcy scored three tries in their 28-11 win at Mumbles, whilst Kidwelly beat Gorseinon 25-15 on Boxing Day.
Pontyberem kept their winning run going at the top of Division Three West, picking up at slender 27-21 win over mid-table Crymych. Two tries from Phil Rose and a further score from Richard Thomas ensured that Pontyberem go into 2009 with their 100 per cent league record in tact.
Shane Williams' first club Amman United picked up their first win of the season, and they did so in style with a six try 37-12 win at Tumble to move off the bottom of the table.
This try tally was only bettered by Laugharne, who scored ten in their 71-15 win over Llanelli Wanderers.
Cardigan beat Newcastle Emlyn 18-6 in a local derby, Aberystwyth defeated Lampeter 24-10 and Haverfordwest won 17-11 at Llanybydder.
Division Three South West table toppers Tondu saw off Glynneath 63-9, with Dean Thomas scoring 23 points including one of the host's nine tries.
Second place Aberavon Quins kept up the pressure by recording a winning bonus point in beating Maesteg Celtic 32-14.
Maesteg Quins defeated Kenfig Hill 30-12 and Skewen breezed past Tonna 50-0.
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.