In Llandovery, Cardiff Quins will meet Tycroes in a Division 1 derby, while Waunarlwydd play newcomers Rhigos. The victors will be awarded with places in the final of the newly-incepted National Plate. The Quins v Tycroes match will kick off the proceedings at 12.30pm, with the Waunarlwydd v Rhigos fixture following at 2.30pm.
National Cup Semis - Builth Wells
Llandaff North v Chester - 2.30pm
Tylorstown v Dolgellau - 2.30pm
National Plate Semis - Llandovery RFC
Cardiff Quins v Tycroes - 12.30pm
Waunarlwydd v Rhigos - 2.30pm