After losing to Tonmawr last weekend, Bridgend Athletic bounced back in style with Simon Evans's try securing a vital 16-11 away win at Whitland.
Aled Davies kicked 19 points as Narberth scored a valuable 29-26 away win at Merthyr. Carmarthen Quins threw away a 14-0 half time lead to be edged out 18-17 by Bonymaen; Paul Warlow kicked eight crucial points to support tries from Chris Keen and Ryan Llewellyn.
Waunarlwydd's Lee Jones completed a full house with 15 points to guide his men to a 23-17 win at Corus while Cwmllynfell also won on the road with a 19-6 win against Dunvant.
In Division Two West, Mumbles go one point clear at the top of the table thanks to a comfortable 32-3 bonus point win at home over Pontyberem.
Relegated to Division Three South West last season, Tondu appear to be back on the up with an easy 31-8 win against local rivals Kenfig Hill to extend their 100% record this season. The home side ran in five tries with Alan Warner, Steve Brown, Craig Fox, Craig Parks and Paul Heatley all getting onto the scoresheet.
Maesteg Quins captain Lyndon Davies was the match-winner with a late try as they beat Aberavon Quins 10-8. Milford Haven got their first win of the season with a terrific 39-33 home win against Birchgrove in Division Four West while Furnace United went down 27-3 to Burry Port in Division Five West.
Penlan kept up their charge in Division Six West with a 36-7 victory at Penybanc.