Glamorgan Wanderers make six changes to the side that lost at Mountain Ash last Saturday in the SWALEC League.
Behind the scrum two of last week's bench Elliot Jones and Sean Carroll start and Charlie Johnson who was unavailable also comes into the centre.
Up front Rhys Jenkins, having recovered from an injury received against Rumney, starts in the front row and there is a shuffle in the back five with Dan Richards moving into the second row to allow Carl Kimber and Dan Crimmins to start in the back row. Alex Luff continues as captain.
"The league positions reflect both our seasons but this game will be no less intense than a top of the table clash. There is pride at stake and a need to show the coaches that a players are worthy of a place in the championship squad for next season," commented captain Alex Luff
"We need to cut out the showboating and silly mistakes and stick to our game plan. If we do that we are more than capable of victory on Saturday," added head coach Chris Ower.
Glamorgan Wanderers: 15 Elliot Jones 14 Joe Xiberras 13 Charlie Johnson 12 Loren Quick 11 Dan Lovell 10 Gareth Cull 9 Sean Carroll; 1 Haval Ibrahim 2 Ross Grimstone 3 Rhys Jenkins 4 Dan Richards 5 Alex Luff (Capt) 6 Carl Kimber 7 Ollie Randall 8 Dan Crimmins
Replacements: 16. Dan Evans 17. Mel Lewis 18. Owain Thomas 19 Owen Marshall 20. Rhys Griffiths
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series