Martin Rodriguez will start at full-back for Argentina's Rugby Championship rematch against South Africa in Medoza.
Rodríguez comes in for Lucas González Amorosino following last weekend's 27-6 defeat to the Springboks in what was the Pumas' historic first appearance in the competition.
Argentina's bench will be confirmed later this week.
Argentina: Martín Rodríguez; Gonzalo Camacho, Marcelo Bosch, Santiago Fernández, Horacio Agulla; Juan Martín Hernández, Nicolás Vergallo; Rodrigo Roncero, Eusebio Guiñazú, Juan Figallo; Manuel Carizza, Patricio Albacete; Julio Farías Cabello, Álvaro Galindo, Juan Martín Fernández Lobbe.