Scotland second-row Jonny Gray has said Argentina are one of the best teams in the world ahead of their meeting at Murrayfield on Saturday.
The 22-year-old, who impressed with his work-rate in defeat against Australia last week, is determined to bounce back against the Pumas.
But he knows his Scotland team face a stern opponent that has shown its quality over the years, especially in the World Cup and 2016.
"Are they up there with the best sides in the world now? I'd say so," he told Sky Sports ahead of the game that should be a tight affair.
"Argentina are a great team. They can attack from anywhere. Look at the players they have got – guys like Agustín Creevy, some of their backs and their huge wingers, so they have some dangerous strike runners. They are always keeping the ball alive so you can never switch off.
"When it comes to facing them up front, in the scrum and in the line-out, it's going to be a huge challenge. Across the board, we have to be switched on.
"You just have to look at some of their recent results in the Rugby Championship to realise they are a world-class side. They beat South Africa and then pushed New Zealand all the way.
"We have to be on it from minute one to the final whistle. We need to be clever, we can't be coughing up ball to them."