Richard Hodges is taking no chances with the cup challenge of Carmarthen Athletic by packing the side with his most experienced players.
Mark Roper starts at outside half with Jason Pocock coming in at fullback.
In the pack Matthew Bolton starts at prop, Nick Kelly resumes as captain in the second row and Richard Thomas and Mike Grimes both start.
The one survivor of the last time the two sides met is Mark O'Leary who is amongst the substitutes. The game also sees the return to the side of Lee Highgate who starts after an enforced layoff.
Glamorgan Wanderers: 15. Jason Pocock 14. Robin Lock 13. Ben Warbuton 12. James Thomas 11. Charlie Johnson 10. Mark Roper 9. Luke Evans; 1. Matthew Bolton 2. Ross Johnson 3. Scott Andrews 4. Nick Kelly (capt) 5. Tom Evans 6. Richard Thomas 7. Lee Highgate 8. Mike Grimes.
Replacements: 16. Richard Emms 17. Mark O'Leary 18. Ben Rose 19. Gareth Knight 20. Glenn Holloway 21. James Loxton 22. Steve Cullen
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.