Perhaps as a nod towards their entry into the Super Rugby series next year, the Pumas have stacked their squad with domestic talent around five players from the English league and two from the French Top 14.
A total of 19 players are making their RWC debut after the Pumas finished their Rugby Championship programme with an historic away win against the Springboks before a loss at home to the same opposition. Coach Daniel Hourcade says the 37-25 win in Durban has boosted the side's RWC hopes.
"It gives us self-belief and makes us more confident to continue what we are doing," Hourcade said. "I'm very happy because we played a perfect game. We were organised, defended well and were effective in attack, which allowed us to score four tries. We seized the opportunities that were presented and that was a big difference. Previously we have not been able to do that. We were better in all aspects of the game for the full 80 minutes," the coach said. "We improved a lot in the scrum from previous matches and in our attack - and that allowed us to beat one of the major powers in world rugby."
Victory had given his side more belief about their ability to cut it at the World Cup. They held their nerve and stared down the mental challenges about beating the Springboks.
The Pumas open up against the All Blacks before playing Georgia, Tonga then Namibia.