Newbridge maintained their perfect start to the season by picking up a bonus point in beating newly relegated Glamorgan Wanderers 24-7 at the Welfare Ground.
Tries from wings Trevor and David James and No 8 Ross Coombs, along with a penalty try, joined forces with two Trevor James conversions to hoist last season's runners up into first place on try count.
Both Bargoed, who beat Mountain Ash 34-14, and Gilfach Goch, who triumphed 33-21 at Rumney, are also on the maximum 10 points after two rounds as they both picked up bonus points on the road.
There were five tries for both teams, with Matthew Llewellyn (2), Nathan Walters, Josh Hughes and Paul Llewellyn crossing for Gilfach Goch, and next weekend's clash between Bargoed and reigning champions Ebbw Vale will be the pick of the season to date.
Tries from No 8 Lewis Wayman, wing Lewis Protheroe, lock Craig Lynch, flanker Adam Coupe and full back Andrew McLaughlin scored Bargoed's tries in their impressive win over newly promoted Mountain Ash, while Ebbw Vale weren't able to pick up a bonus point at home in beating Beaddu 19-9. They still remain unbeaten, however, with nine points from their first two outings.
Blackwood had the boot of outside half Chris Wannell to thank for their 26-19 home win against Tredegar. He kicked four penalties and converted tries from Anthony John and Nathan Gitting to notch 16 points.
A second half try from No 8 Andrew Murphy proved the difference between Merthyr and Treorchy after the two sides had been locked at 13-13 at the break. Murphy's decisive score was converted by Neil Burnett, while the visitors' only second half points came via a Jordan Lloyd penalty.
Wales reached their first semi-final since 2013 in the opening round of this season's HSBC World Rugby Sevens Series in Dubai. WRU TV's Graeme Gillespie recaps on what proved to be an eventful tournament
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