Argentina flanker Juan Manuel Leguizamon hailed his side's will to win after their 26-24 victory over South Africa in Salta.
A late penalty from Santiago Iglesias helped to settle the result, as Argentina came from behind to clinch only their second-ever win over the Springboks, and the first on Argentine soil.
Leguizamon was a try-scorer in the second half and the veteran spoke with great pride after the final whistle.
"This team has shown our character, our personality. I take my hat off to the whole team for what we have achieved."
Argentina centre Matias Orlando added: "This has been a long time coming, and was one of our objectives before the start of the tournament.
"We are very happy because we achieved this thanks to a lot of hard work, producing on the pitch what we practiced in training.
"There were setbacks, injuries, and the team remained firm. This will make us stronger."