Taffs Well remained on course for promotion to Division 3 South East, with a 26-11 win at Rhiwbina.
Tom Lowe gave the home side an early lead with a penalty goal, as Taffs Well took time to settle their nerves but a fine try by player-coach Steffan Edwards was just the tonic the side needed. Daryl Mota kicked the conversion for a 7-3 lead.
Lowe kept Rhiwbina close with his second penalty to leave his side 6-7 down at the break.
Mota , who was showing remarkable coolness for a player who had never kicked before, put over a penalty, and that was followed by a second try from Edwards, again converted by Mota, to increase the lead to 17-6.
Fullback Mike Baptiste then scored a fine solo try having run from deep in his own half. This was again converted by Moto, who had not missed a kick all afternoon.
But as Taffs Well ran from deep looking for their forth try and a bonus point, they were caught unawares and Richard Myers picked up the loose ball to score a consolation try for Rhiwbina.
Taffs Well's last two games are both against Pontyclun on Wednesday at home (kick off 7.15 ), and then on Saturday the return fixture at Pontyclun.
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