Beddau and Loughor will be the venues for the play-off matches to determine which two teams join the four Division Three champions – Brynmawr, Ammanford, Bedlinog and BP Llandarcy – in graduating to Division Two next season.
The four runners up from the Division Three leagues – East, West, South-East and South-West – were drawn out of the hat by the WRU to create fascinating games.
South-West runners-up Aberavon Quins will face Gilfach Goch, of South-East, at Beddau, while West runners-up Cardigan will meet Eastern rivals Abergaveny at Loughor.
The race to join Division Five champions Crumlin (East), Burry Port (West), Porth Quins (South-East), Betws (South-West) and Aberavon Green Stars (South-Central), as well as the best of the runners up from those five divisions, Ystradgynlais, will end at Dunvant and Blackwood.
The draw sees West runners up Cefneithin face South-Central runners up Porthcawl at Dunvant, while the second place side from the East, Chepstow, will face South-East runners up St Joseph’s at Blackwood.
The matches will be played under WRU Challenge Cup rules, which means that if the scores are level at the end of the game the winners will be determined by the following criteria:
1. The team that has scored the most tries
2. The team that has scored the most converted tries
If a winner can still not be determined then the game will go into extra time (10 minutes each way).
If the scores are still level then points 1 and 2 will be revisited.
If there is still no winner then the promotion place will be determined on the toss of a coin.