Glamorgan Wanderers coach Richard Hodges must wait on some late fitness tests before confirming his pack selection for the trip to Bedwas in the Principality Premiership.
Alistair McDonald and Gareth Knight have been added to the squad and Hodges will delay the final line-up until just before kickoff.
In the backs Charlie Johnson resumes his place at outside centre with Matt Trowbridge moving out to the wing. Gareth Morris, fully recovered from a shoulder injury, returns to the squad after coming through a development squad game last weekend.
Glamorgan Wanderers: 15. Dan Fish 14. Matt Trowbridge 13. Charlie Johnson 12. Simon Rosser 11. Steve Cullen 10. Scott Sneddon 9 Lloyd Williams; 1. Nathan Trevett 2. Ieuan Dobbs 3. Scott Andrews (capt) 4-8 from: Tom Evans, Gareth Knight, Lee HighgateMazin Al-Azzawi, Ben Rose, Carl Kimber, Alistair McDonald.
Replacements: 16. Ieuan Davies 17. Mark O'Leary 18. John Barley 19. James Richards 20. Gareth Morris 21. Harry Trelawny 22. Robin Lock
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