Neath comfortably swept passed the challenge of Caerphilly at the Gnoll last night with scrum half Gareth James starring in a 51pts to 17 success.
The scrum half crossed for a hat trick of tries with full back Dylan Pugh also featuring prominently with a try, a penalty and a hat trick of conversions.
The home side had to produce an improved performance in the second half after the visitors had taken a shock 17-14 interval lead.
Further tries from wingers Richard Carter, Andrew Jones and centre Peter Smiriglia secured the win with Neath also being awarded a penalty try. Fly half Aled Davies added a conversion.
Llanelli, with three games in hand on Neath, needed a late try from number eight Aled Gravell to secure a 23pts to 11 win at Bridgend.
Scrum half Mike Phillips made a telling break and fed Gravell who crossed for the late second half score after fly half Paul Fisher and flanker Bryn Griffiths had both crossed for earlier tries. Fisher also added a brace of penalties and a conversion.
Lock Huw Alford replied with a try for the Brewery Field side and Jon-Pierre Ferreira added a brace of penalties after skipper Alun Lake had been forced from the field with a leg injury.
Swansea produced a fluent first half display as they lead 15pts to 3 at the interval in their clash with their Ebbw Vale counterparts.
However, the home side rallied after the interval and secured a 20pts to 15 win. Left-wing Paul Mackey, in is second game back after injury, and centre Matthew Brayley scored tries for the All Whites while fly half Gareth James added a conversion and a drop goal.
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series