Argentina have Juan Manuel Leguizamon back for their clash with Australia, but Guido Petti and Juan Martin Hernandez are injured.
The fit-again Juan Manuel Leguizamon and Brumbies scrum-half Tomas Cubelli will start for Argentina against Australia on Saturday, as two of four changes to the Pumas line-up.
A leg injury forced Leguizamon to miss his country's 57-22 defeat to New Zealand, in which Argentina threatened a shock for more than 50 minutes before the All Blacks powered clear.
However, the powerful flanker returns for this weekend's match in Perth, while Cubelli is set to come up against a number of his Super Rugby team-mates from the start after being promoted from the bench at Martin Landajo's expense.
The availability of Leguizamon enables Javier Ortega Desio to switch to the second row in place of Guido Petti, who was hurt against the All Blacks.
Like Petti, Juan Martin Hernandez is also out through injury. Santaigo Gonzalez Iglesias replaces him at inside centre.
Coach Daniel Hourcade's other change in personnel sees Lucas Gonzalez Amorosino come in on the wing, with Matias Moroni switching to the 13 jersey and Matias Orlando dropping to the bench.
Argentina team to face Australia: Joaquin Tuculet, Santiago Cordero, Matias Moroni, Santiago Gonzalez Iglesias, Lucas Gonzalez Amorosino, Nicolas Sanchez, Tomas Cubelli; Nahuel Tetaz Chaparro, Agustin Creevy (captain), Ramiro Herrera, Javier Ortega Desio, Matias Alemanno, Pablo Matera, Juan Manuel Leguizamon, Facundo Isa.
Replacements: Julian Montoya, Lucas Noguera, Enrique Pieretto, Marcos Kremer, Leonardo Senatore, Martin Landajo, Gabriel Ascarate, Matias Orlando.