Scrum-half Pichot to lead Argentina in Arbizu’s absence
Pichot, who moved to French champions Stade Francais in the summer, was the vice-captain and he said: "It's a huge responsibility but it's great to know that everyone in this squad has the ability to make good decisions themselves."
Pichot, who led Argentina to a 1999 World Cup win over Ireland which put the Pumas into the quarter-finals, Pichot made his comeback to Test rugby after a nine-month injury-enforced break in last month's PanAmerican Cup which Argentina won at a canter against the USA, Canada and Uruguay.