Llantrisant remain top of Division Two East after beatings Fleur de Lys by a 21 point margin.
Gavin Groves, Jonathan Williams and Ian Worgan ran in three tries for the league leaders in a 28-7 victory.
Tredegar jumped to second in the table after routing Mountain Ash 28-0 away from home.
All the scoring came in the second half with the visitors notching a bonus point through their four tries, two of which came from Jamie Henthorne.
The other two teams making up the top four, Gilfach Goch and Brynmawr, drew 10-10 in their clash at Welfare Park.
Bedlinog were another side who picked up a bonus point win, crossing five times in a 36-12 win at Treherbert.
Elsewhere Ynysybwl beat Abergavenny 17-12 and Abercynon won 23-8 at Rhydyfelin.
New Tredegar picked up their first win of the season in Division Three East, beating local rivals Rhymney 18-6.
Two second half tries from Dewi Winstone and Steve Osbourn were enough to lift the home side off the bottom of the table.
They rise above Abertillery Blaenau Gwent, who were defeated 22-11 by leaders Nelson, and Cwmbran, who lost 32-25 at Gwernyfed.
In a battle of the bottom two in Division Four East Risca thrashed Pontllanfraith 35-0, picking up their first league win of the season and with it their fifth bonus point.
The local derby between Rhiwbina and St Joseph's was won 10-3 by the hosts, with Danny Hobbs scoring the winning try for the Squirrels.
Centre Andy Farrell lived up to his famous name as he scored two of Usk's four tries in their 28-21 win over RTB Ebbw Vale in Division Five East.
Trinant clinched a losing bonus point as they came back from a 17-0 half-time deficit against Talywain, narrowing the scoreline to 17-13 by the end.
Callum Jones and Leon Probert crossed for Talywain in the first period.
Hartirdge made it two wins in two games in Division Six East, beating the morning leaders Crickhowell 26-6.
Blackwood Stars capitalised on Crickhowell's defeat by beating Markham, who started the day second in the table, 22-10 to take top spot on try difference.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
Both Bargoed and Swansea were seeking their first win of the Principality Premiership season this afternoon. It proved a fruitful day for the hosts - not only did they win, but Bargoed claimed a try bonus point.
Cardiff managed to keep their unbeaten record at home intact, but only just as Bridgend made them work extremely hard before the Blue and Blacks secured a hard fought Principality Premiership win at the BT Sport Arms Park last night.
Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.
Wales Sevens head coach Gareth Williams looks back on the Rio Sevens success where he helped GB win silver. He believes the successful campaign is a huge boost to his Welsh squad as they prepare for another World Series, as WRU TV's Graeme Gillespie discovers
British and Irish Lions head coach Warren Gatland will be heading back home to take on the All Blacks next year where for him, success for 2017 is all about going to New Zealand and winning a Test Series.
Last week all roads led to Eugene Cross Park where defending champions Ebbw Vale hosted this season's launch of the Principality Premiership. WRU TV's Graeme Gillespie was there to capture the thoughts of Damien Hudd, captain of Ebbw Vale, and WRU Head of Performance, Geraint John.
Llandovery made it three in a row when they defeated Aberavon in the final of the National Foster's 7s at BT Sport Cardiff Arms Park on Sunday. On another eventful day of sevens, Newport claimed the Plate and the Dragons won the women's crown
Last week saw Cardiff welcome players from around the world for the 21st Golden Oldies Festival. The tournament features players over 35 years of age, and this year's event saw a select few represent the WRU in a 'friendly' against the Wooden Spoon.
Wales Under 18 captain Callum Bradbury is delighted to have seen his side claim a narrow 18-17 victory against a strong SA Schools 'A' side to end the three-match Under 19 International Series in South Africa on a high note.