Cardiff and Newport will meet for the 392nd time at club when the Blue and Blacks entertain the Black and Ambers at the Arms Park on Saturday afternoon.
It is the greatest of club meetings as far as history is concerned and stands up against soccer derbies such as Liverpool-Everton and Man Utd-Man City.
Cardiff lead by 193-140 on wins with 58 games drawn, but that is their version, while Newport claim six further matches counted in war years and they won four and drew two!
Cardiff's young squad would seem to have problems in holding Newport this time, as the visitors are currently topping the table.
Aberavon take on what seemed a good Bedwas side from two weeks back, but a home loss to Llanelli and a 74-point beating at Newport has changed that.
The Bridgend-Pontypridd match has been switched to Sardis Road, as the Rugby League international against Australia will be played at the Brewery Field on Sunday (2.00pm).
Bottom club Llanelli go to Pontypool Park in the hope of pulling off as big a shock as their win at Bedwas did last week, while Swansea hope to end a bad spell with a win over an Ebbw Vale side who snatched a draw at Newbridge in midweek.
Carmarthen Quins are in good form, but will find Cross Keys good opponents and Caerphilly will have to be at their best to hold of a confident Neath team, while Llandovery will be hoping to repeat their midweek win over Swansea when they entertain Newbridge at Church Bank.