However the Gnoll side still have to hope that the Arms Park youngsters lose both their remaining games to enable them to snatch the title. Neath have to play Llanelli away while Cardiff are at home to Pontypridd and away to Bridgend.
Wing Richard Carter again impressed crossing for a brace of tries and fly half Dylan Pugh maintained his recent league form by scoring a try as well as landing a penalty and a conversion. The forwards secured a penalty try while flanker Steve Tandy sealed Neaths eleventh victory in the league with a second half try.
Michael Hook replied with a brace of penalties and conversions as well as landing a drop goal while full back James Rowles and centre Scott Williams crossed for tries.
The Gnoll U'21s had secured a weekend victory after they defeated a Combined Services side by 19pts to 10 last sunday.
Lloyd Hayden crossed for a brace of tries while Shaun Connor added both conversions as Neath lead by 14pts to nil at the interval. A further try from lock Craig Jones secured an impressive win for the home side.
The WRU has teamed up with Crawshay's to tour Georgia in June. The side, which will be called the Crawshays WRU President's XV, will play Emerging Georgia twice, in a tour which supports the Welsh Government's efforts to grow relations between the two countries.
Wales Sevens are looking to re-group after a disappointing tournament last time out in South Africa. The next double leg in New Zealand and Las Vegas offers Gareth Williams a chance to redeem themselves.
Wales Women's head coach Rhys Edwards was at Llandovery to see the conclusion of an entertaining Women's Regional championship where any one of three teams were in contention for title glory on the last day of action.