Argentina have been boosted by the return of Felipe Contepomi for their must-win World Cup clash against Scotland in Wellington on Sunday.
The experienced back will start at inside centre at Wellington Regional Stadium after recovering from a rib injury suffered in the bruising 13-9 loss to England.
That kept him out of the win over Romania and although he is not pain free, he was confident he was fit enough to take on the Scots.
"Today I had a full-on training," said Contepomi. "It was the day where I was going to try myself in full contact. It was OK.
"Obviously there is a bit of pain. It's not pain free but I think it worked well. Hopefully I will be playing. If nothing happens in the next 48 hours I will be playing."
Scotland coach Andy Robinson always expected Contepomi to be back for the encounter but was probably not expecting to see him at inside centre alongside Marcelo Bosch in the midfield.
But Contepomi, who plays at Stade Francais, said it was a position he was comfortable with.
"I've played probably more at 12 than 10 for Argentina," he said. "The same in Toulon [his previous club] I have been playing 12. In Leinster I played 12 many times.
"It's a position I very much like and I feel very comfortable in. I think for this game it's the best option for the team and that's why we took that decision."
The number 10 jersey will instead by worn by Santiago Fernandez following his strong performance in the 43-8 win over Romania.
Fernandez will give the Pumas another kicking option, along with full-back Martin Rodriguez and Bosch, if the wet and windy conditions predicted for Wellington on Sunday materialise.
"The forecast says it will rain and there will be a lot of wind. We know perhaps the kicking game will be very important," said coach Santiago Phelan, who has stuck with the same pack that caused England so much trouble in their opening match.
"We think that's the best option for this game. Number nine [Nicolas Vergallo] and number 10 are working well and Felipe is playing a lot at 12. We want him to be in that position."
Argentina and Scotland have played five times since the last World Cup with Scotland winning the series last year in Argentina.
But Phelan believed his side were better prepared for this match.
"I think we are well prepared because we have had two-and-half months working together. That's the main difference from when we have played them over the last three or four years," he said.
"We think that in this moment we are very well prepared. We are in very good condition so that is the difference.
"But Scotland are also well prepared and they are playing good rugby. They did it against us in 2010 and I think they play very good rugby and it will be a very tough game."
Argentina team: Martin Rodriguez; Gonzalo Camacho, Marcelo Bosch, Felipe Contepomi, Horacio Agulla; Santiago Fernandez, Nicolas Vergallo; Rodrigo Roncero, Mario Ledesma, Juan Figallo, Manuel Carizza, Patricio Albacete, Julio Farias Cabello, Juan Manuel Leguizamon, Juan Martin Fernandez Lobbe.
Replacements: Agustin Creevy, Martin Scelzo, Mariano Galarza, Genaro Fessia, Alfredo Lalanne, Luca Gonzalez Amorosino, Juan Jose Imhoff.