Quins will be missing James Davies after he was selected to represent Wales and go to the IRB Sevens tournament in Australia. Meanwhile, stalwart Andrew Thomas misses out with illness.
Dan Newton at fullback and Alex Pickersgill at centre will both be threats the Wizards defence will be wary of.
Carmarthen: 15 Dan Newton 14 Darren Daniel 13 Alex Pickersgill 12 Andrew Banfield 11 Jason Harries 10 James Dixon 9 Huw Rees, 8 Luke Joseph 7 Ellis Lloyd 6 Aidan Laxton 5 Haydn Pugh 4 Gavin Evans 3 Ian Jones 2 Gethin Robinson 1 Gareth Thomas.
Replacements: Trystan Davies, Richard Wilkes, Andrew Beaujean, Sion Bennett, Carwyn Jones, Rhodri Wells, Rhys Thomas, Rheon James.