Local rivals St Peter's and Cardiff HSOB play a match at the Harlequins Ground, where the 'Rocks' are the hosts, but on a pitch that was once the home of the Old Boys.
Also in the East, Monmouth will be challenged strongly on their fine pitch by Newport HSOB. Something has to give in the West as Milford Haven and Betws near the bbottom of the table, while Amman United face a stern test at home to Llandybie.
Fairwater, yet to concede a point, go to Dowlais in the South-East and Bishops Field will be the scene for a clash of unbeaten clubs Llandaff and enarth, with Rhigos taking on Cowbridge near the foot of the table.
Chris O'Callaghan takes over as Diirector of Rugby at Aberavon Green Stars, who should gain a win at Pyle in the South-West in a Division where Resolven entertain Maesteg Celtic, while in the North, Nant Conwy have a chance for a first win as they take on Dolgellau.
GB7s women left their England base to train in Wales this week. Olympic Games hopeful Rachael Burford gives WRU TV's Graeme Gillespie her thoughts on Welsh teammate Jasmine Joyce - a 'one touch wonder'
The GB7s women's squad is currently training at Wales' Centre of Excellence where assistant coach Richie Pugh tells WRU TV's Graeme Gillespie some 'tough calls' will have to be made when it comes to finalising the 12 spots for Rio's Olympic Games.
Wales U20's Billy McBryde is looking forward to starting his first game against New Zealand this afternoon in the World Rugby U20 Championship where his side are looking to gain revenge from last week's pool defeat to the Kiwis.