Argentina have recalled veteran centre Felipe Contepomi for their Rugby Championship clash against Australia in Rosario on Saturday.
Pumas coach Santiago Phelan has made two changes to his line-up as they again bid for their first-ever victory since joining the four-nation competition last season.
Australia have also struggled in this year's tournament, and their battling 14-13 win over Argentina in Perth is their lone victory of the campaign.
Contepomi will replace Santiago Fernandez at centre, while the other change in the backs sees Horacio Agulla coming in for Lucas Gonzalez Amorosino.
"As always, we think we have our best 15 to start the game," said Phelan.
"Felipe and Horacio are two great players who bring a lot to the team. The team has been playing well and these two experienced players are important."
Phelan also rejected suggestions that he should have made more changes following last weekend's 33-15 hammering by New Zealand
"We didn't make more changes because we think this is our best," he added.
Argentina: 15 Juan Martin Hernandez, 14 Horacio Agulla, 13 Marcelo Bosch, 12 Felipe Contepomi, 11 Juan Imhoff, 10 Nicolas Sanchez, 9 Martin Landajo, 8 Juan Manuel Leguizamon, 7 Pablo Matera, 6 Juan Martin Fernandez Lobbe, 5 Patricio Albacete, 4 Julio Farias Cabello, 3 Juan Figallo, 2 Eusebio Guinazu, 1 Marcos Ayerza.
Replacements: 16 Agustin Creevy, 17 Nahuel Lobo, 18 Juan Pablo Orlandi, 19 Manuel Carizza, 20 Benjamn Macome, 21 Tomas Cubelli, 22 Santiago Fernandez, 23 Lucas Gonzalez Amorosino.