Scotland coach Andy Robinson has warned his side to be disciplined when they tackle Argentina in Wellington as both bid to progress from World Cup Pool B.
Defeat for Argentina would end their hopes of qualifying, while a loss for the Scots would leave them having to defeat England in their final game.
"Both sides can play well under pressure," said Robinson.
"The side that keeps their discipline under pressure will be the side that wins this game."
Scotland have won three of the last four games against the Pumas, but it was the Argentines who triumphed when the teams met at the quarter-final stage of the 2007 tournament in Paris.
"What's happened in the past has happened," said Robinson. "It's about what happens in the 80 minutes [on Sunday].
"It will be vitally important that we are able to keep our discipline."
The wind at the Wellington Regional Stadium, a port-side location renowned for swirling breezes, could have an impact on kicking at goal and out of hand.
"What we've seen here is that it gets quite gusty, so it will change and it will change in specific parts of the pitch," said Robinson.
"We've got to be able to make decisions at key times depending on what's happening with the wind.
"It's the same for both sides - you just get on and you play with it.
"Our kickers have kicked well today so we're pleased with that."
Robinson led Scotland to a 2-0 Test series win in Argentina in June 2010, but early in his term as head coach, the Pumas inflicted defeat in Edinburgh.
"Two years ago, we had beaten Australia with a famous victory, having also beaten Fiji," he recalled.
"We played Argentina and lost 9-6. That was my third game in charge.
"We understand totally how the Argentinians play and we have full respect for what they do."
Argentina captain Felipe Contepomi has been confirmed in their side, starting at inside centre, despite still carrying an injury that forced him to miss out against Romania.
However, Robinson stressed that it was not a one-man team.
"They're bright rugby players, the understanding of momentum to create space for the backs when needed," he added.
"Felipe's played against us in the centre before. We know that he's a very good operator.
"But it's not about one man. We can't focus just on Felipe Contepomi.
"We've got to focus on all 15 because they have a really good balance to the way they play."