The top three in Division Two West, Builth Wells, Loughor and Bridgend Athletic, all picked up home wins this weekend.
Bridgend Athletic recorded four tries from Nicholas Hinton (2), Simon Evans and Rob Coles in a 29-3 bonus-point victory over BP Llandarcy.
Loughor went two better, crossing six times during a 51-13 triumph against Penclawdd.
But it is Builth Wells who remain top after beating fourth-place Waunarlwydd 17-12.
Aberystwyth thrashed bottom side Amman United 48-0 in Division Three West, but still trail Pontyberem by ten points at the top of the table. Ponty won 36-24 at home to Llanybydder.
Newcastle Emlyn won narrowly at Lampeter Town, coming away from Ceredigion with a 26-24 victory.
With Brynamman's match against Burry Port postponed, Llandelio extended their lead at the top of Division Four West with a 24-0 win over Pembroke Dock Harlequins.
Division Five West leaders Cefneithin drew 15-15 at third-place Milford Haven.
Furnace United failed to capitalise on that result, and stay in second after they lost 29-0 at Fishguard and Goodwick.
Penlan picked up a bonus point at Tregaron, notching seven tries in a 44-25 victory to stay top of Division Six West.
Pontrhydyfen jump from fourth to second after scoring seven tries of their own in a 48-13 win at Aberavon Naval.
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.