Cavallero began his career for Argentine team Velez Sarsfield during the 1995/96 season.
He made his debut for Argentina in 1996 against Venezuela and was in the squad for France 98.
Opportunities for further international recognition have been few and far between since and he has won only eight more caps.
But after moving to top Primera Liga side Celta Vigo in 2000, his fortunes have improved.
He is, however, unlikely to figure in the World Cup.