Only three matches survived after Treorchy had pulled out at Tredegar with no front row.
Maesteg took a nine-point lead at the top with an amazing 52-8 win over Whitland, scoring 26 points in either half. It was a triumph for age as Allan Bateman, Kevin Ellis and John Devereux all had fine games for the Old Parish with eight tries resulting.
Narberth scored a fine 33-15 win at Bonymaen, including a try for former Parc Mawr favourite Adrian Killa and a try by full back Rob Heal helped Blackwwod to a 16-13 success at UWIC.
While Dunvant held the lead in the West by taking a revenge win over Cwmavon by 22-3, Abercynon only stay at the head in the East, after losing to Builth Wells 31-8 at home, as Merthyr also fell - 23-17 away to Llantweit Fardre.
Cwmavon had beaten Dunvant early season, but they found the Broadacre Boys too strong in the return and Cwmllynfell stay second after beating bottom clubVardre 57-3.
One surprise result came in the East as Dinas Powys turned back Rhymney by 25-22 on The Common and prepare to meet Pontypridd there on Saturday in theKonica Minolta Cup.