Argentina captain Felipe Contepomi will switch from inside centre to fly-half for his side's second Test clash against England in Buenos Aires on Saturday.
Contepomi, who has overcome a bout of illness to retain his place in the side, leads a side showing five changes to that beaten 32-3 by England in Salta last weekend.
Guillermo Roan comes in at loose-head prop, Julio Faras Cabello, who played for London Welsh last season, has moved from the back row to the second row with Rodrigo Baez starting at blindside flanker. Nicolas Vergallo will partner Contepomi in the half-backs and Gabriel Ascarate comes into the side at inside centre. Belisario Agulla, brother of Bath's Horacio Agulla, starts on the wing.
Argentina: M Bustos Moyano, B Agulla, G Tiesi, G Ascarate, M Montero; F Contepomi (captain), N Vergallo; G Roan, M Garca Veiga, M Bustos, J Faras Cabello, M Galarza, R Baez, B Macome, T Leonardi.
Replacements: M Guidone, P Henn, F Gmez Kodela, E Lozada, T De la Vega, T Cubelli, B Madero, M Orlando.