Substitute Kian Hughes delivered an 83rd minute winner to send Rhyl tumbling to just their second league defeat of the season – both of them on Anglesey.
In a close-fought game of few chances, the 19-year-old Hughes, a summer signing from Bethesda Athletic, applied the finish from a Dion Donohue assist to settle the issue.
Leaders Porthmadog moved two points clear after a 3-1 victory at Y Morfa.
Jack Williams put Conwy in front in the 31st minute, but a Jonah Wilton own goal levelled things up in first half stoppage time.
Two minutes into the second half, Danny Brookwell edged Port ahead via a Josh Banks assist and it remained close before Ashley Owen netted in the 87th minute, Rhys Alun providing the set up.
Mathew Jones struck twice as Llannefydd celebrated a narrow home triumph over their Anglesey visitors.
Osian Jones put Cefni into the lead on 21 minutes, but Mathew Jones made it one-apiece after 43.
Tom Jones grabbed Llannefydd’s second after 69 and two minutes later Mathew Jones completed his brace, David Lawson-Cooke with the assist.
Josh Stanley-Williams claimed a late consolation for Llangefni with 94 minutes on the clock.
All the goals came in the first half at Parc Gwydir, Sam Thomas on the mark after seven and 38 minutes for the Rwsters with Tomas Cardias-Williams adding another in added time, while Jake Walker responded for Saints.
Ruthless Corwen hit their hosts for six, captain Scott Evans and Tom Mann with a pair of goals apiece, subs Robbie Williams and Meirion Williams adding one each.
New signing Callum Freeman notched bottom side Menai’s consolation.
NFA’s 100 percent home record is over, but a point at home to class opponents Hotspur was still a decent result.
In a game largely spoiled by the wind, Tomi Llywelyn handed the visitors a seventh-minute lead from an Ifan Emlyn Jones assist, while Lewis Evans levelled from an Oliver Hansen set-up after 43.
NFA remain second in the table.
Fine result on their travels for third-place Connah’s Quay Town, Ben Hughes scoring on 38 and 64 minutes, before Pascal Gomez made sure of the points with a third after 76.
Assists came from Gomez, Kyle Reid and Sam Reynolds.
Both sides finished with nine men.
For Town, Reynolds saw red on 81 and Edward Brown on 90+2, while Pwllheli’s Gethin Williams walked for two yellows on 81 and Sion Jones was red-carded with 90+2 gone.
Harri Hughes’ 56th minute net-finder from a Kevin Lloyd assist sealed three welcome points for visitors Nantlle Vale.
Leon Sumner starred for Yr Wyddgrug on Wednesday night. Image: CPD YR WYDDGRUG - diolch…
Goalmouth action from Kinmel Bay Development (blue) versus St Asaph Development. Pictures: BARRY GRIFFITHS -…
Asa Thomas (green) hit five goals for CPD Boded on Wednesday night NORTH WALES COAST…
Rhos Aelwyd player Owen Czerniak (left) and Corwen's Lewis Wills tussle for the ball. Picture:…
Felinheli (red) on the attack against Trearddur Bay. Pictures: PATRICK CAIN - many thanks LOCK…
Matty Griffiths converts a penalty for Prestatyn Sports in their title decider against Penrhyn Bay…