Argentina coach Santiago Phelan has named Bordeaux fly-half Nicolas Sanchez as replacement for injured first-choice Juan Martin Hernandez in their team to face South Africa in the Rugby Championship.

Racing-Metro star Hernandez pulled out of the team Wednesday with a hamstring injury sustained while training in Buenos Aires.

Saturday's game in Mendoza follows South Africa's 27-6 win over the Pumas in Cape Town last Saturday.

Argentina

Martin Rodriguez; Gonzalo Camacho, Marcelo Bosch, Santiago Fernandez, Horacio Agulla; Nicolas Sanchez, Nicolas Vergallo; Juan Martin Fernandez Lobbe, Alvaro Galindo, Julio Farias Cabello; Patricio Albacete, Manuel Carizza; Juan Figallo, Eusebio Guinazu, Rodrigo Roncero

Replacements (from): Marcos Ayerza, Martin Bustos Moyano, Lucas Gonzalez Amorosino, Juan Imhoff, Martin Landajo, Tomas Leonardi, Juan Pablo Orlandi, Bruno Postiglioni, Nicolas Sanchez, Leonardo Senatore, Tomas Vallejos