With Corus losing 22-13 at Pontyberem, Dunvant took full advantage to record a 43-16 win over Quins, with left winger Mitchell Ford and flanker Rory Gallagher each scoring two tries.
Tonmawr recorded the biggest win of the day, belting Seven Sisters 57-5 on the back of a hat-trick of tries from winger Martin Morgan. Centre Ken Morris grabbed a couple and outside-half Austin Howells kicked seven conversions and a penalty goal for a personal haul of 17 points.
Loughor and Kidwelly fought out an entertaining 27-all draw, with Loughor winger Ian Wright snatching a share of the points with a late try. Mumbles are still looking for their first win after a frustrating 21-18 loss at home to Carmarthen Athletic, but Banwen are finally on the board with a 20-16 victory at Gorseinon, who slip a couple of places in the table.
In Division 3 West, Trimsaran and Penclawdd continue their battle at the top of the table after both sides recorded big wins on Saturday.
Trimsaran fullback Thomas Bollell (four) and right winger Mark Davis (three) helped themselves to tries in a 71-12 thumping of bottom-placed Hendy, while Penclawdd ran out 47-20 winners at Pembroke Dock Quins. Tumble's impressive 30-3 win over Lampeter was their first victory of the season.
Pontarddulais have stretched their lead to five points in Division 4 West after the match between nearest rivals Neyland and Llandeilo was postponed. Pontarddulais beat Milford 34-14, with braces of tries to outside-half Jonathan Lloyd and backrower Nic Walters.
In Division 5 West, Llanybydder winger Ken Payne helped himself to a hat-trick as the leaders trounced cellar dwellers St Davids 56-0, while second-placed Burry Port beat Aberaeron 22-9 thanks to three tries from scrum-half Rhodri Morris.
Welsh players and management joined Deputy Minister for Sport Ken Skates at the Pierhead Building, Cardiff Bay earlier this week to reveal the Union's pioneering school-club hub initiative has been so successful the project will now almost double the scale of the original project.
The Scarlets, Newport Gwent Dragons, Cardiff Blues and the Ospreys look ahead to Judgement Day III which sees the Blues take on the Ospreys (2.30) and the Dragons tackle the Scarlets (4.45pm) at the Millennium Stadium tomorrow afternoon.
Ystradgynlais and Ynysddu played out a titanic struggle at Taffs Well in the SSE SWALEC Bowl semi-final. At the end of the game neither team could be separated after a 15-15 stalemate but Ystradgynlais go through on try count.
Blues strike first in JD III battle - Newport Gwent Dragons lock Andrew Coombs, WRU referee Dylan Llyr Jones and Cardiff Blues hooker Matthew Rees decide dressing room allocations for Judgement Day III
Wales Under 18 captain Calum Haggett has received a conditional offer to read Biomedical Science at St Anne's College, Oxford. WRU chairman Gareth Davies went to meet Calum and Coleg y Cymoedd Principal Judith Evans to wish him luck in his exams and pass on some of his personal experience.
Dodgy tattoos, carthorses, Avatar and soft chins are revealed by Wales Sevens players Tom Williams and Sam Cross as they profile the Wales Sevens squad taking part in Hong Kong this weekend in the latest round of the HSBC Sevens World Series.