Mountain Ash closed the gap on Swalec Division Two East leaders Gilfach Goch thanks to a 38-10 triumph over third-placed Treorchy, while the league leaders suffered a shock defeat at the hands of Rhydyfelin.
Scrum -half Meiron Thomas crossed twice for tries while back-row duo Scott Davies and Chris Edmonds also touched down for Mountain Ash to secure a well earned victory. There was more good news for the men from Duffryn Pennar Parc when Rhydyfelin sprung a surprise on the league leaders, with a 25-21 victory. Mark Palmer, Lee Scarfe and David Gratton all scored tries for Rhydyfelin, while Gareth Walters scored the solitary try for the hosts.
Elsewhere there was basement battle between eleventh placed Newport Saracens and twelfth-placed Garndiffaith. The Saracens came out on top and ran in seven tries in a 47-12 victory. Blindside flanker, Carl Townsend, was a constant threat and stormed over for a hat-trick of tries. Townsend was joined on the scoreboard by Dale Leith, who grabbed his own brace, Tom Piper and Lewis Culverwell.
In Division Three East Abergavenny continued their march towards promotion with a 36-8 win over Tredegar Ironsides, William Harris, Stephen Evans and Gareth Carney among the scorers at Bailey Park.
Fleur De Lys also maintained their impressive run of form and keep the pressure on the league leaders thanks to 41-20, six try romp over Nelson. Scrum half Daniel Cook, no.8 Lee Taylor, wing Jamie Henthorn and centre due Ieuan Morris and Brett Green and crossed for tries.
There was a top-of-the-table battle in Division Four East where second-placed Talywain travelled to top side Abertillery BG. Talywain came out on top and sealed a hard-fought 15-13 victory. The visitors raced into a 12-3 half-time and held on for victory despite a second-half Aled Penn try for the hosts.
The last five years have been an emotional rollercoaster on and off the pitch for RGC1404. Promotion to the Principality Premiership was the culmination of five years of hard work and investment in North Wales. WRU TV caught up with prop Joe Simpson, who was one of the first intake of WRU North Wales Academy players in 2010.
Ebbw Vale captain Damien Hudd picked up the biggest accolade of the night at the 11th Principality Premiership Awards Evening held at Principality Stadium, after leading his side to the title for the first time.
Wales assistant coach Robin McBryde is predicting a tough battle against England on Sunday despite the fact they may not be considered to be at full strength. Players will be out to impress Eddie Jones which makes England a dangerous proposition, he says.
Wales U20 captain Tom Phillips and performance psychologist Dr Rich Neil explain why spending three days at Monmouth RFC has further strengthened the togetherness of the squad ahead of the #WorldRugbyU20s