In the other two Division 1 games played on Saturday, Builth Wells took care of Fleur De Lys 34-10 with a clinical five-try performance, while Beddau surprised Narberth with a 21-0 away shut-out. Hooker Matthew Hunt, scrum-half Rhys Edwards and lock Damien Adams scored the tries, with outside-half Steve Robinson converting the lot.
Bonymaen were in Konica Minolta Cup action on Saturday, and showed no signs of slowing down with a 21-5 win at in-form Penallta. They scored tries through centre James Davies, backrower Alan Powell and scrum-half Stuart Allen and travel to Pencoed for the fourth-round tie.
Ystrad Rhondda are holding up the Division 1 table, so it was no surprise that Premiership side Glamorgan Wanderers knocked them out of the Cup with a 62-0 shutout. Geoff Hobbs bagged three of Wanderers' 10 tries.
Mid-table Llangennech kept their Cup hopes alive with a 33-10 win at Mumbles, and will back themselves to go even further in the competition with a home fourth-round tie against Tonna. Centre Jay Morgan scored two of Llangennech's four tries.
UWIC's 20-14 home win over Llantwit Fardre has earned them a trip to Newport Saracens for the next round. Centres Jon Beddoe and Pat Foreman and hooker John Walkens were among the points for the winner, with centre Rob Kotyla scoring Fardre's only try.
Whitland's Cup tie against Bridgend Athletic was postponed for the second week running. The winners of the match when it's eventually played face Cross Keys in the fourth round.