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France's youngest players during the 1940 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 |
|---|---|---|---|
| Oscar Heisserer | 25:193 | 9325 | 28 Jan 1940v Portugal |
| Désiré Koranyi | 25:364 | 9496 | 28 Jan 1940v Portugal |
| Francois Bourbotte | 26:337 | 9834 | 28 Jan 1940v Portugal |
| Roger Courtois | 27:242 | 10104 | 28 Jan 1940v Portugal |
| Raoul Diagne | 29:78 | 10671 | 28 Jan 1940v Portugal |
| Auguste Jordan | 30:340 | 11298 | 28 Jan 1940v Portugal |
| Jules Vandooren | 31:28 | 11351 | 28 Jan 1940v Portugal |
| Émile Veinante | 32:230 | 11918 | 28 Jan 1940v Portugal |
| Étienne Mattler | 34:33 | 12452 | 28 Jan 1940v Portugal |