Argentina prop Marcos Ayerza has hailed the Pumas' "huge achievement" in defeating RBS 6 Nations champions and World Cup semi-finalists Wales on home soil.
Although the Pumas trailed 9-6 at half-time and centre Felipe Contepomi had already left the action on a stretcher, they went up a gear in the second period, scoring 20 points and performing with an intensity that Wales could not handle.
"We didn't have control of the game in the first-half," Leicester forward Ayerza said. "The scrum and the lineout weren't going our way, but we came back into the game. Playing games against the best sides in the world and playing at a high tempo and intensity can only help us to develop."
He went on: "You saw that against Wales. We played 80 minutes at a very good intensity, and this win is massive for us.
"It shows we are going in the right direction and that we are improving as a nation. To beat Wales at the Millennium Stadium is a huge achievement, one that we are very proud of.
"This year has been our first season in the Rugby Championship, and there is no doubt we will continue to improve.
"Now, we have two more massive games coming up against France and Ireland. They will be tough, but this win will have given us extra confidence."
Skipper Juan Martin Fernandez Lobbe, as ever, led from the front with an inspired display that proved a fitting way to mark his 50th cap.
And Ayerza added: "He is such a talisman for us, such a positive influence in so many different ways.
"He is one of the best captains I have ever played under, and he always shows the way with his performances. He always gives 100%."