Carmarthen Quins President Brian Jones warned against complacency after his side went 16 points clear at the top of the Division One West table with a 17-9 win away at second-placed Tonmawr.
Jones said: "There's a long way to go in the season and Tonmawr will catch us unless we start scoring more tries. Tonmawr have been massive this season and are scoring eight or nine tries a game, we need to start doing that too to pick up bonus points.
"We are very happy to be top of the table but this is a two horse race and they're scoring tries and we're not. They gave away too many penalties today but they're still a very good side."
Meanwhile Carmarthen Athletic went third with a 41-21 win against bottom side Dunvant, who remain without a win this season and Narberth had to cling on to edge out Llangennech in a gripping 38-31 win, after leading 27-0 at half-time.
Bargoed are the new leaders of Division One East, but they had to stage a dramatic comeback to beat bottom of the league Newport Saracens 32-28. Greg Gallon and Danny Jones each got two second half tries for Bargoed to leave Newport without a win and bottom of the table.
Merthyr slipped into second as they lost 24-16 to fourth-placed Blackwood. Two second-half tries from Mark Birkey sealed the win for Blackwood who dominated throughout. Llanharan were the big scorers of the day, running in seven tries away at Rumney in a 43-5 victory. Newbridge kept up the pressure at the top with a narrow 34-28 win over the students of UWIC.
Each side grabbed four tries a piece and in a thrilling game.
In the other games Ystrad Rhonnda picked up a bonus point in their 22-7 victory against Beddau and strugglers Penalta lost 19-15 away at Caerphilly.
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.