Tredegar were shocked by Bedlinog in the clash of the top two in SWALEC League Division Two East, as the leaders were hammered 48-0 by the second placed Foxes.
Bedlinog notched six unanswered tries but still trail Tredegar by 10 points at the top of the table.
The Merthyr Tydfil club went one better than both Abergavenny and Rhydyfelin, with Abergavenny scoring five tries in a 27-11 win over Brynmawr, and Rhydyfelin also hitting five in a 27-17 victory against Treherbert.
Flanker Ronnie Kynes scored four tries as New Tredegar, who are propping up Division Three East, gained a creditable draw against Garndiffaith.
Steve Osbourne's last minute try pulled New Tredegar to within two points of the league leaders, allowing Craig Thomas to convert with the last kick of the game to earn a 34-34 draw.
Treorchy are still the team to beat in Division Three South East, as they defeated St Peters 26-10, as are Llandaff in Division Four East after their 33-22 win over Machen.
But Tredegar Ironsides kept up the pressure on the Four East leaders after they ran in nine tries against Nantyglo, winning the second v third contest 61-0.
Pentyrch are now four points clear in Division Four South East after they beat Taffs Well 25-5, their lead at the top extended after Heol y Cyw drew 10-10 at Porth in another second v third clash.
In a top two clash in Division Five South East, leaders Pontyclun scored nine tries in a 55-6 triumph over Cifynydd.
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