Argentina coach Mario Ledesma has responded to his side's problems up front against New Zealand by making three changes in the pack for Saturday's clash with Australia.
The Pumas struggled to cope in set-piece situations during their 46-24 loss to the All Blacks last weekend in Nelson, conceding a number of penalties at scrum time.
In the hope of solving the issue, Ledesma has selected Santiago Medrano to replace fellow prop Gaston Cortes in a reshuffled front row, with Nahuel Tetaz Chaparro shifting across to loosehead.
There is also a place in the starting line-up for flanker Pablo Matera, while Juan Manuel Leguizamon is named on the bench.
Argentina face a Wallabies side boosted by victory over South Africa last time out, while the visitors have only managed one Test victory on Australian soil since 1983.
Argentina XV to face Australia: Emiliano Boffelli, Bautista Delguy, Matias Moroni, Jeronimo De La Fuente, Ramiro Moyano, Nicolas Sanchez, Gonzalo Bertranou; Nahuel Tetaz Chaparro, Agustin Creevy, Santiago Medrano, Guido Petti, Tomas Lavanini, Pablo Matera, Marcos Kremer, Javier Ortega Desio.
Replacements: Julian Montoya, Santiago Garcia Botta, Juan Pablo Zeiss, Matias Alemanno, Juan Manuel Leguizamon, Martin Landajo, Bautista Ezcurra, Juan Cruz Mallia
