Freddie Naylor was a four-goal star for a Junction side which moved level on points with leaders Prestatyn Town Development.
The Railwaymen only trail Prestatyn on goal difference but have game in hand on the Seasiders.
Seventeen-year-old Naylor scored four times for the second game in succession for the Development team, having also netted on his last two outings for the firsts.
Harri Evans-Burton, 17, and even younger 16-year-old Osian Jones also found the net at Myddleton College, Robin Owen with a consolation for Denbigh.
Macauley Lewis made it 11 goals in four matches for St Asaph with a quadruple strike in Sunday’s thrashing of Meliden.
Harrison Northall added a double and Evan Espley a single, Richard Hill and Jayden Fallon for the Miners.
Ifan Evans (3) and Josh Evans booked the points for Llanrug, Leo Morris and captain Jac Giles replying for Trearddur Bay.
Due to a dispute with the league over which division they should compete in, Llandudno Amateurs Development played their first match of the season in the cup.
And it was a winning occasion for the visitors, Charlie Martins, Ryan Boddis and Kai McDonald-Hughes sharing the goals at Treborth, Lucas Cruz responding from the penalty spot.
Osian Davies, Jac Lewis, Llion Griffiths and a Iwan Jones penalty secured Nantlle’s passage to the next round, Dyfed Alston netting from the spot for the hosts.
Penalties were needed to settle this close-fought contest at The Meadows.
Deio Jones scored twice for Henllan, while Finley Lloyd and Owen Hughes-Fowell replied to ensure it went to spot-kicks.
Eben Morris, George Pierce and Deio Jones all converted their pens for Henllan, while Rory Wynne Jones saved the first effort from Sports, who then missed their next two to ensure the away side advanced.
Cai Tibble (2), Iwan Roberts-Jones and Robin Thomas split the goals in Pwllheli’s latest convincing win.
Gethin Jones (3), Guto Hughes, Iwan Bohana, Meilyr Povey (pen) and Aron Humphreys combined to total up Celts’ seven goals, Sion Williams (2) and Tom Cai Rees Jones hitting back for Gaerwen.
Loz Jones has started the season really well for Denbigh Town It's time to launch…
Sean Eardley has joined the coaching set-up at Holywell Town. Picture: HOLYWELL TOWN FC Holywell…
Bob Brodie Trophy top marksman Jamie McDaid (right - stripes) in recent Welsh Cup action…
Mike Chapman of Llysfaen is on 21 goals for the season Mike Chapman of Llysfaen…
Dec McManus struck at the double for Bangor City 1876. Picture: CPD DINAS BANGOR CITY…
NORTH WALES WOMEN'S RECREATIONAL LEAGUE LATEST Monday, September 28 Llandudno Amateurs 3 Blaenau Ffestiniog Amateurs…