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.
WRU International Skills Coach Jason Strange is a busy man, combining the new role with that of Wales Under 20 attack coach, Ebbw Vale head coach and continuing to teach at Ebbw Fawr Learning Community.
Warren Gatland and Sam Warburton look ahead to this week's crunch RBS 6 Nations tie against France, where the Wales skipper in particular is keen to make his mark, as Paris has proved a bleak place for him in the past.
Following their historic win over England, Wales Under 20 suffered a narrow, 36-34 loss to their Scottish counterparts last weekend, despite outscoring them by five tries to three. Watch the match highlights and reaction.
WRU TV go behind the scenes with the Wales squad as they put the final touches in place ahead of the clash against Scotland at Murrayfield. Follow the squad on their captain's run, the kickers visit to Murrayfield and Neil Jenkins' press conference