Former leaders Pill Harriers suffered a shock loss in Division Three East, going down 17-5 at Pontypool United.
United outscored the visitors by two tries to one, with Mark Thorley and John Sutcliffe both crossing the whitewash. Darryl Carter added the extras to both and also fired home a penalty.
The Harriers meanwhile were restricted to a solitary touchdown from Spencer Gibson.
Highflying Senghenydd took full advantage of their rivals’ slip-up, recording a comfortable 29-6 home triumph over Croesyceiliog.
The Saints helped themselves to a try bonus point thanks to a brace from Robert Bosley, with Chris Payne and Gareth Gibbs also racing over. Lloyd Rowland converted three and also landed a penalty.
Abertillery B G came back from a 22-10 half time deficit to register their sixth win, eventually running out 35-22 winners in the local derby match against Brynmawr
Tillery scored 25 unanswered points in a sensational second half performance. The Green and Whites crossed the visitors’ line five times through Dafydd Jones, Jamie Davies, David Rossiter, Kyle Griffiths and Aled Penn, while the influential Haile fired home two conversions and two penalties.
Meanwhile, Garndiffaith jumped to second with a try bonus 26-0 home victory over Newport HSOB.
The hosts ran in four tries through second row Matthew Billings, outside half Darren Pearce, prop Sam Evans and full back Sean Courtney. Pearce also added three conversions.
Elsewhere, Risca condemned free falling Caerphilly to their eighth defeat with a convincing 24-9 victory and Abergavenny crossed for five tries in their 36-6 triumph over Tredegar Ironsides.