In Division Two, Gilfach Goch stay top of the league, despite missing out on a bonus-point in their win away at title-rivals Llantwit Fardre.
Treorchy cut the gap at the top to one point with a seven-try demolition of Abercynon. Centre Trystan Lazarus was the star, scoring a hat-trick as the hosts eased to a 48-13 victory.
There were tries aplenty at Llantrisant, where Rhydyfelin sealed only their second win of the season. Ross Lewis provided the star turn for the visitors, kicking 18 points and scoring a try to seal a 38-18 victory.
Elsewhere, there were wins for Ynysybwl and Brynmawr, and a thrilling 16-16 draw between Mountain Ash and Cardiff Saracens.
Fleur De Lys are the new leaders of Division Three courtesy of a bonus point win at lowly Cwmbran, coupled with Abergavenny’s shock 20-15 defeat at Blaina.
Fleur De Lys’ tries came from front-row pair Gareth Watkins and Craig Marshall, one from wing Ryan Jones and a brace by centre Ryan Morris. There were also 12 points from the boot of fly-half Paul Emanuelli as the visitors sealed the victory, 37-20.
Steven Lang was the hero for Rhymney as they edged a thriller at Pill Harriers by just a single point. Callum Rowlands thought he had stolen it with a late drop-goal for Pill, who scored tries through wing Ross Bridgman and full-back Gareth Hassell. But Lang stole the show with his late effort. The Rhymney tries came from wings Matthew Chard and Greg Plant as they sealed the win, 21-20.
Tredegar Ironsiders are up to fourth after a Daniel Edwards-inspired victory over Pontypool United. Centre Edwards ran in four tries, while there was also a score for wing Craig Lewis and 19 points from the boot of fly-half Gareth Carney, as the hosts sealed a 44-8 win.
There were also bonus point wins for Nelson, who beat Gwernyfed, 42-5, and Croesyceiliog, who scored eight tries on their way to a 50-23 win against Newport HSOB.
In Division Four, Talywain remain top despite being held to a, 11-11 draw against Nantyglow, while Risca leapfrog Abercarn into second with a 27-10 win over their rivals.
