Two of the clubs, table-topping Canton and fifth placed Fairwater, meet in a league match this weekend. The other team from their league still involved in the Bowl is Penygraig.
Canton, who won the Division 3 East Central B title last season, will have to travel in Round 4 of the Bowl next month after being drawn against Rhymney. They are currently fifth in Division 3 East.
Fairwater will have home advantage when they host Bryncethin, who are currently top of Division 3 West Central B, and Penygraig will welcome Llanybydder, of Division 3 West A.
Unbeaten Baglan, of Division 3 West Central A, will host Banwen, from the league below them, while table-topping Aberavon Green Stars, who are also in Division 3 West Central A, welcome Tylorstown. Caerau Ely, who play in Division 3 East Central B, face the biggest rip of the round with a long trek to Aberaeron.
SPECSAVERS NATIONAL BOWL – ROUND 4
Aberaeron v Caerau Ely
Aberavon Green Stars v Tylorstown
Abercarn v Abertysswg
Baglan v Banwen
Fairwater v Bryncethin
Penygraig v Llanybydder
Rhymney v Canton
Tumble v Whiteheads / Laugharne
Denbigh and Holyhead will fly the flag for north Wales in the third round of the newly created National Shield – with both teams picking up home draws.
Denbigh are the only 2nd XV to make it through to this stage and will welcome Pontardawe, while Holyhead will host Llanrumney.
SPECSAVERS NATIONAL SHIELD – ROUND 3
Denbigh II v Pontardawe
Hollybush v Ogmore Vale
Holyhead v Llanrumney
Penybanc v Cardiff Saracens
South Gower v Crumlin
Byes: Rhigos, Cwmgwrach, Bettws
