|Full name||Pietro Sante Arcari III|
|Date of birth||2 December 1909|
|Place of birth||Casalpusterlengo, Italy|
|Date of death||8 February 1988|
|Height||Script error: No such module "convert".|
Pietro Sante Arcari III (2 December 1909 – 8 February 1988) was an Italian footballer and forward. Born in Casalpusterlengo, Province of Lodi, he played in the 1930s for A.C. Milan, and Genoa. He played 256 matches in Serie A, scoring 80 goals.
In the 1934 season he scored 16 goals for Milan the fifth highest in Serie A leading to his selection by Vittorio Pozzo to the national team. Consequently he is one of only four players in Italian national team history to become World champion while never being capped. He was the third son in a soccer family, even his brother Bruno made an appearance for the national team. While his most notable success came at Milan, an unusual incident occurred while playing for Genoa in 1937. During a Fiorentina-Genoa match won 2–1 by Genoa in Florence the linesman called a nonexistent offsides on Arcari; the referee Caironi, without hesitation sent his colleague to the locker room, who was quickly replaced.
His older brothers Carlo Arcari and Angelo Arcari and younger brother Bruno Arcari all played football professionally. To distinguish them, Carlo was referred to as Arcari I, Angelo as Arcari II, Pietro as Arcari III and Bruno as Arcari IV.
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