There was a huge shock in the West as Kidwelly's14-0 loss away to Lampeter was their first this season and they are joined on 33 points by Haverfordwest, who have a game in hand after beating Gorseinon 30-22.
In the South-East, leaders Treherbert had their match against Taffs Well called off, with both Mountain Ash and Nelson recording good victories, particularly Nelson, who beat Ynysybwl 16-13.
Banwen regained the lead of the South-West with 16-8 success against Bryncoch and with Maesteg Quins not playing, Nantyffyllon moved to third after defeating Glynneath 27-10.
With no fixtures in the East, Bargoed remained five points ahead at the top, while Ruthin extended their lead to six points in the North after defeating Caernarfon 60-8 and finding that Nant Conwy's match was called off.
Leaders Loughor did not play in the West, where Pembroke Dock Quins made ground with a 40-14 win away to Milford Haven. In the South-West there was a top-of-the-table clash that saw Alltwen defeat Taibach 26-8 and take over by one point with a match in hand.
Cefneith are six points ahead in the West after winning 50-6 away to St David's though Crymych were 49-9 winners at Llanybydder. Llandaff are also clear leaders - by five points in the South-East - after a 27-7 success away to Deri.
In the North, Colwyn Bay suffered their first loss, by 15-0 at Bethesda and Denbigh, who have played two game more, are six points ahead after winning 20-3 at Machynlleth.
Resolven lead the South-West and won 35-33 at Tonna, but the Aberavon Green Stars 49-0 win at Porthcawl was ficticous, as the match was not played! Trinant won 18-5 at Blaenavon to lead in the East.