Newport Gwent Dragons lock Ian Gough has kept his place in the Welsh starting line up for the second test against Argentina on Saturday.
Fellow Dragons players Nathan Brew and Rhys Thomas are named on the replacements bench.
Rhys Thomas is the last of the five uncapped players who joined the tour yet to feature under Gareth Jenkins and the Wales coach won't hesitate to use him if required. "We have come on this tour to develop young players and we have already had a great amount of success in achieving that aim," said Jenkins. "Saying that, we are about winning Test matches and we have not handed out caps lightly. Rhys will feature if the need arises and we will all be pleased to see him win his first cap if the game requires it."Gareth Jenkins has made two changes to the starting xv for the second test with James Hook coming in at inside centre and Huw Bennett comes in for Matthew Rees at hooker.
Wales:
Lee Byrne (Ospreys) ; Mark Jones (Llanelli Scarlets), Jamie Robinson (Cardiff Blues), James Hook (Ospreys and Neath), Shane Williams (Ospreys) ; Nicky Robinson (Cardiff Blues), Mike Phillips (Cardiff Blues); Duncan Jones (Ospreys - Captain), Huw Bennett (Ospreys), Adam Jones (Ospreys), Ian Gough (Newport Gwent Dragons), Ian Evans (Ospreys and Swansea), Alun Wyn Jones (Ospreys and Swansea), Gavin Thomas (Llanelli Scarlets), Alix Popham (Llanelli Scarlets)
Replacements:
Richard Hibbard (Ospreys), John Yapp (Cardiff Blues), Rhys Thomas (Newport Gwent Dragons), Gareth Delve (Bath Rugby), Andy Williams (Bath Rugby), Nathan Brew (Newport Gwent Dragons), AN Other.