Coach Chris Davey has made three changes to the starting line-up of the Wales under-21 side that defeated Italy in the opening game of the IRB's under-21 World Cup, when they take on Argentina today at the Rand Afrikaans University ground.
Italy were beaten by 82-18 with 12 tries being run in by a rampant Wales side last Friday, but now they will face a much tougher test.
Matthew Nuthall replaces Nick Jones on the wing, Adam Matthews for Matt Miles as hooker and Robin Sowden-Taylor for Gareth Williams on the flank.
With Dwayne Peel having returned home after being injured at Cape Town on Saturday, Cardiff's Craig Miller will be the scrum half replacement.
The side to meet Argentina is: G Swales; L Roberts, M Jones, M Brayley (capt), M Nuthall; N Robinson, M Phillips; P James, A Matthews, A Jones, Ryan Jones, L Tait, R Williams, Rhys Jones, R Sowden-Taylor. Replacements: C Miller, M Hook, S Williams, M Miles, G Morris, B Griffiths, G Williams.
WRU International Skills Coach Jason Strange is a busy man, combining the new role with that of Wales Under 20 attack coach, Ebbw Vale head coach and continuing to teach at Ebbw Fawr Learning Community.
Warren Gatland and Sam Warburton look ahead to this week's crunch RBS 6 Nations tie against France, where the Wales skipper in particular is keen to make his mark, as Paris has proved a bleak place for him in the past.
Following their historic win over England, Wales Under 20 suffered a narrow, 36-34 loss to their Scottish counterparts last weekend, despite outscoring them by five tries to three. Watch the match highlights and reaction.
WRU TV go behind the scenes with the Wales squad as they put the final touches in place ahead of the clash against Scotland at Murrayfield. Follow the squad on their captain's run, the kickers visit to Murrayfield and Neil Jenkins' press conference