After the win against Tredegar, Glamorgan Wanderers make four changes for the visit of the Steelmen for Saturday's SWALEC League Division 1 East clash.
In the backs Rhys Griffiths gets his first start at scrum half and Joe Sullivan joins in-form Joe Xiberras in the centre.
Up front Carl Kimber returns at No 8 after recovering from injury and John George, who made an impact from the bench last week, starts in the second row instead of Alex Luff. Mike Stephens replaces Sean Cochlin on the subs bench.
"This year we have locked horns with Ebbw on a regular basis. Saturday will be a good marker of our progress in recent weeks," commented head coach Chris Ower.
"Our sides know each other very well, there will be few surprises but their league position does not lie. They are in top form," added forwards coach Matthew Bolton.
Glamorgan Wanderers 15. Owen Marshall 14. Dan Lovell 13. Joe Xiberras 12. Joe Sullivan
11. Ian Newbury 10. Gareth Cull 9. Rhys Griffiths; 1. Joe Russell 2. Mike Catris 3. Mel Lewis (capt) 4. John George 5. Ed Morris 6 Dan Richards 7 Andrew Bradbury 8. Carl Kimber
Replacements: 16. Ross Grimstone 17. Ryan Beddows 18. Garth Knight 19. Mike Stephens 20. Tim Cronin
Wales reached their first semi-final since 2013 in the opening round of this season's HSBC World Rugby Sevens Series in Dubai. WRU TV's Graeme Gillespie recaps on what proved to be an eventful tournament
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