* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Ubaldo Matildo Fillol (locally: [uˈβaldo maˈtildo fiˈʒol]; born 21 July 1950), nicknamed el Pato (in English: "the Duck"), is an Argentine football coach and former goalkeeper. He took part in the 1974, 1978 (where he won the championship with his team and was voted Best Goalkeeper) and 1982 World Cups representing the Argentine national team. He also played in the South American qualifiers for the 1986 World Cup, but he was finally not chosen for the final team that played (and won) in Mexico. His usually considered to one of the greatest Latin American keepers.
At the 1978 World Cup, Fillol wore the number 5 jersey, instead of 1 which is the standard for goalkeepers. This happened because Argentina, at that time, gave players their numbers alphabetically. The number 1 jersey was worn by Norberto Alonso. For the same reason, Fillol wore the number 7 jersey at the 1982 tournament while Osvaldo Ardiles wore the number 1. This practice was last permitted in 1986.