Carmarthen Quins edged the battle of the Division One heavyweights with a 13-12 victory over Aberavon in the Sixth Round of the Principality Cup.
It turned into a nightmare afternoon for Wizards kicker Jamie Davies who missed four easy chances to put his side into the last 16, including a last-minute penalty attempt that was well within range.
Wing Josh Freeman crossed for Quins in the opening half and Giles Thomas converted and added a penalty. Aberavon stormed back in the second half with tries by Kristian Owen and Lee Abdul
with Davies finally managing to put the ball between the posts for a conversion.
Thomas had no problems at the other end and slotted over a penalty in the second half to secure the win.
Caerphilly, the only Premier side in at this stage after finishing bottom last season, eased through with a 35-22 victory at Llandovery. Luke Richards provided some of the accurate goal-kicking missing from the Castletown side in recent matches by landing three penalties and converting three of their four tries.
Division Two's Maesteg gave Pontypool a fright before going out 22-23 at Llynfi Road. Pooler raced into a 17-0 interval lead with tries by Nicky Lloyd and Byron Hayward who finished the match with 15 points by adding two conversions and a brace of penalties.
Maesteg wing Neil Dixon bagged a pair of tries, Grant Epton and Richard Morgan also crossed but the home side had a glorious chance to snatch victory when Epton fired a long-range penalty wide of the posts in the final minute.
Division Five Central side Nantymoel had not tasted defeat for over a year but the difference in class told when they came up against Division One side Bedwas who easily won 33-12 with wing Nathan Hill crossing for a brace of tries.
Bonymaen go through after beating Beddau 22-8 and Cross Keys owed their 25-18 win over Whitland to Gethin Worgan who slotted over five penalties. Newbridge were too strong for Narberth and two tries by Gareth Turner helped them to a 34-15 victory over the Otters.
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