Springboks head coach Heyneke Meyer has praised the impact of scrum-half Fourie Du Preez on the younger members of the squad.
The 2007 Rugby World Cup winner has returned to the national squad after playing overseas with Suntory Sungoliath in Japan.
Du Preez's last appearance for the Springboks was in the 2011 RWC defeat against Australia, but with 62 Tests to his name the former Bulls number nine has plenty to offer the squad and has been passing on his experience in training.
"I was very impressed with Fourie du Preez today (Monday), I always knew he was a world-class player and it's been an honour for me to coach him since he was 19-years-old," said Meyer.
"He hasn't lost anything. I know it was the first training session, but the small touches on the ball and the way he puts the forwards through the gaps.... I am very happy that I brought him in."
Meyer also reserved words of caution for the threat posed by Argentina ahead of Saturday's match, highlighting their good preparation.
"They also want to play a more expansive game, so they will be a better side and they've adapted to the competition now," added Meyer.
"In the beginning of the year they gave a lot of their players off and had deals with the clubs where they can have their full team. They've been in training for three to four weeks, so they will be fresh and ready to go."