Second row Alex Luff makes a welcome return to the squad after a long layoff after suffering a knee injury against Swansea last season.
"We must build on our positives and reduce the mistakes. Despite our league position we cannot fault the squad's attitude and effort," commented head coach Chris Ower.
"It's been a long time since Mountain Ash visited the Wanderers and we know we will need to be at our best to break our losing streak," added manager Gavin Walker.
Glamorgan Wanderers 15. Owen Marshall 14. Dan Lovell 13. Joe Xiberras 12. Charlie Johnson 11. Ian Newbury 10. Gareth Cull 9. Tim Cronin; 1. Steffan Simpson 2. Mike Catris 3. Mel Lewis (Capt) 4. Dan Richards 5. Ed Morris 6 Alex Bourne 7 Andrew Bradbury 8. Will Rees
Replacements: 16. Ross Grimstone 17. Joe Russell 18. Alex Luff 19. Joe Sullivan 20. Sean Cochlin