Both games kick off at 7:30pm and according to the official website the line ups will be as follows
Merthyr Tydfil
Neil Alexander
Kevin McNaughton
Darren Purse
Chris Barker
Joe Jacobson
Stephen McPhail
Riccy Scimeca
Curtis McDonald
Michael Chopra
Jamal Easter
Neal Ardley
Subs:
Martyn Margetson
Michael Corcoran
James Simpson
Mark Jones
Mika Chunuonsee
James Upcott
Bradley Middleton
Jonathan Brown
Ashley Buswell
Carmarthen Town
Mark Howard
Rhys Weston
Glenn Loovens
Roger Johnson
Joe Ledley
Jeff Whitley
Nick McKoy
Darcy Blake
Malvin Kamara
Andrea Ferretti
Paul Parry
Subs:
Scott Allison
Chris Gunter
Lloyd Evans
Matthew Smith
Kyle Bassett
Jack Carlile
Scott McCoubrey
Gregg Coombes