Athletic beat Pontyberem 14-3, while league leaders Dunvant had their game postponed due to the bad weather, and second-placed Loughor could manage a 3-all draw at home with Corus.
Carmarthen back-rower Nick Morris grabbed the only try of a dour game, and there were only two first-half penalty goals to trouble the scorers at Loughor, where Peter Smiriglia and Rod Williams exchanged goals in a costly draw for the home side.
Felinfoel crept further away from the highly competitive drop zone with their impressive 28-9 home triumph over fourth-placed Banwen, while Gorseinon jumped to fourth from bottom with their 27-12 home win over Kidwelly.
Penclawdd became only the second team to travel to north Wales and beat last season's northern champions Llangefni in the league this season as they ran out 23-9 victors. The first v third clash in Division 3 West moved Penclawdd 11 points clear of Llangefni.
Newcastle Emlyn made it 20 straight defeats for Hendy as they beat the basement side 22-0, while Lampeter sneaked a 10-7 verdict at
Laugharne to leap-frog Pembroke Dock Quins in the table following their 17-10 home defeat by Aberystwyth.
The top four sides in Division 4 West all came out on top to ensure the battle for the title will continue to the end of the season. Leaders Portarddulais were comfortable 25-5 winners over bottom-of-the-table Llandybie at home, second-placed Ammanford were too good for
New Dock Stars, winning 22-7 on the road, and third placed Llandeilo beat Cardigan 15-3. Neyland remain in the hunt in fourth, 11 points off the leaders, thanks to their 24-0 away win at Crymych.
The battle for the title in Division 5 West continues with leaders Llanybydder putting Furnance to the sword 55-0 and their nearest rivals Burry Port doing almost the same at home to Bynea, winning 32-0.
In Division 5 South-West, none of the top six sides picked up a victory on a day of rain-induced shocks. League leaders BP Llandarcy suffered only their second defeat with a 28-27 reverse at Neath Athletic, while second-placed Ystradgynlais drew 0-0 at home with Porthcawl. Fourth-placed Cefn Cribbwer were beaten 15-8 at Cwmgwrach.
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