Whitland snatched the lead of Division One in an amazing game with only fly half Aled Davies getting on the score-sheet with a second-half penalty to defeat Builth Wells 3-0.
Maesteg, without a game, fell to second, and Llangennech held third spot as they defeated Fleur de Lys 31-0 with tries by Brad Kierstad, Mark Bowen, Kevin Jones and talented young scrum half Chris Davies.
Two tries by centre Nathan Walters helped Beddau gain a 26-20 win at Bonymaen after wing Chris Batsford had scored an early home try, while veteran Graham Evans scored for Carmarthen Athletic, but they fel 18-14 at Blackwood, for whom centre Jamie Jones scored another brace of tries.
Narberth won 37-0 at bottom club Brynmawr with wing Elgan Vittle (2) Adrian Killa and Andrew Bowen going over and Gareth James kicked 17 points. Glamorgan Wanderers had tries by Andrew Crowley and Lewis Collins in a 17-6 win at Bridgend Athletic and UWIC gained a splendid 33-14 win over Tonmawr with Phil Dolman kicking 18 points to add to tries by Harry Trelawney, Richard Whyffin
and Nathan Trowbridge.
Newport Saracens and Ystrad Rhondda are neck and neck in Two East after further good wins and Waunarllwyd kept six points ahead of Cwmllynfell in the West after defeating Nanymoel 40-10.
The Saracens scored a 26-13 win at Hirwaun and Ystrad Rhondda won 30-13 at home to bottom club Risca, while Merthyr registered a good 24-3 success against Rumney at The Wern.
In the West, Dunvant regained form by defeating Felinfoel 25-3 and Kidwelly kept in touch by winning 28-17 at Cwmavon.
Bargoed notched tries by Gareth McCarthy, Darren Humphreys and Gary Jones and defeat a game Pontypool Utd for a 17-10 win - their 13th successive - in Three East and Loughor did exactly the same in the West, but their 14th win was a narrow 10-3 home success over battling Trimsaran.
Pill Harriers held second place in the East after a good 33-0 victory over Rhymney and Gorseinon kept their second spot behind Loughor after defeating Tenby Utd 22-8.
The South-East battle for the top saw Mountain Ash and Rhydyfelin win again with the Old Firm scraping home 16-14 at Gilfach Goch and Rhydyfelin remaining unbeaten by turning back Nelson 23-8.
Maesteg Quins lead the South-West after beating Vardre 20-0 and five clubs are just three points behind, though Alltwen fell to defeat at Nantyffyllon.
In the East, Pontllanfraith remained top after just holding off Cardiff HSOB 17-10 and Crumlin returned to form to defeat St Peter's 22-3. In the West, Amman Utd extended their lead by thrashing Burry Port as Neyland fell 23-19 at home to Laugharne.
South-East leaders Fairwater were without a match and Aberdare made ground with a 14-13 success at Bedlinog, while Penarth stayed in touch with a narrow win at lowly Pontyclun.
In the South-West, Resolven and Tonna stayed in front after home victories over Aberavon Green Stars and Maesteg Celtic respectively, but Briton Ferry fell off the pace after losing at Heol y Cyw.
While North leaders Llangefni were winning at Dolgellau, Mold gained a splendid 18-13 victory at Nant Conwy.
Nantyglo remained unbeaten with a 14th success in the East, but only by 12-5 at Gwernyfed, while Caldicot pulled off a sock by turning back Machen by 17-0.
In the West, Pembroke won 8-0 at Pontyates to remain two points ahead of Llangwm with New Dock Stars in hot pursuit.
South-West leaders Abercrave routed Cwmtwrch 60-3 away in a division where Glyncorrwg pasted Cwmgwrach by 88-7 and in the South-East a lone Justin Lott penalty took South Wales Police home by 3-0 over Blaengarw as Cilfynydd fell to a 15-11 home loss against Cefn Coed..
North leaders Bala kept ahead of the pack with a 20-6 win at Bro Ffestiniog and bottom club Rhos surprised Rhayader by 14-12.
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