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Italy's youngest players during the 1957 season, and their age in years and days on the occasion of their final appearance, starting or coming on as a substitute.
For each player age is measured in days, and in years and days, from their date of birth to the day of their first appearance.
| Player | Age (Y:d) | Age (days) | Match |
|---|---|---|---|
| Marcello Agnoletto | 24:314 | 9080 | 11 Nov 1956v Switzerland |
| Amleto Frignani | 25:50 | 9182 | 25 Apr 1957v Northern Ireland |
| Carlo Galli | 26:50 | 9547 | 25 Apr 1957v Northern Ireland |
| Armando Segato | 26:59 | 9556 | 01 Jul 1956v Brazil |
| Giorgio Ghezzi | 26:124 | 9621 | 11 Nov 1956v Switzerland |
| Ardico Magnini | 27:253 | 10115 | 01 Jul 1956v Brazil |
| Giampiero Boniperti | 28:158 | 10385 | 09 Dec 1956v Austria |
| Ermes Muccinelli | 28:339 | 10566 | 01 Jul 1956v Brazil |
| Giovanni Viola | 30:5 | 10963 | 01 Jul 1956v Brazil |
| Egisto Pandolfini | 30:293 | 11251 | 09 Dec 1956v Austria |