However, despite the hard won experience Phelan is also wary of the dreaded second season syndrome enveloping his side.
"It's good to be in the second year because we know what it is about and we know what is happening,'' said Phelan. ''[However] but it is also [tougher] because the other teams know us and they are always improving.''
On paper Argentina look to have named their strongest team of the tournament so far for Saturday's match. Captain Juan Martin Fernandez Lobbe (53 tests) returns to inspire the troops and first choice lock Manuel Carizza has recovered from shoulder injury sustained in the Soweto mauling against South Africa. One time Blues target Juan Martin Hernandez is also restored to the top XV, though he will play at fullback to make way for highly rated first five Nicolas Sanchez. Veteran Felipe Contepomi has been relegated to the bench, replaced by Santiago
Fernandez but Phelan said it was simply "rotation" through a long tournament.
15. Juan Martin Hernandez
14. Gonsalo Camacho
13. Marcelo Bosch
12. Santiago Fernandez
11. Horacio Agulla
10. Nicolas Sanchez
9. Martin Landajo
8. Juan Manuel Leguizamon
7. Pablo Matera
6. Juan Martin Fernandez Lobbe (captain)
5. Julio Farias Cabello
4. Manuel Carizza
3. Juan Figallo
2. Eusebio Guiazu
1. Marcos Ayerza.
Reserves:
16. Agustin Creevy
17. Nahuel Lobo
18. Juan Pablo Orlandi
19. Mariano Galarza
20. Benjamin Macome
21. Tomas Cubelli
22. Felipe Contepomi
23. Lucas Gonzalez Amorosino.