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Switzerland's youngest players during the 1951 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 |
|---|---|---|---|
| Roger Vonlanthen | 20:162 | 7467 | 16 May 1951v Wales |
| Charles Antenen | 20:346 | 7651 | 15 Oct 1950v Netherlands |
| Willy Kernen | 21:69 | 7740 | 15 Oct 1950v Netherlands |
| Robert Ballaman | 24:298 | 9064 | 15 Apr 1951v West Germany |
| Jacques Fatton | 24:300 | 9066 | 15 Oct 1950v Netherlands |
| Georges Stuber | 25:156 | 9288 | 15 Oct 1950v Netherlands |
| Willi Steffen | 26:59 | 9556 | 16 May 1951v Wales |
| Adolphe Hug | 27:50 | 9912 | 12 Nov 1950v Sweden |
| Charles Casali | 27:171 | 10033 | 15 Oct 1950v Netherlands |
| Rene Bader | 28:97 | 10324 | 12 Nov 1950v Sweden |
| Roger Quinche | 28:211 | 10438 | 18 Feb 1951v Spain |
| Andre Neury | 29:41 | 10634 | 15 Oct 1950v Netherlands |
| Gerhard Lusenti | 29:173 | 10766 | 15 Oct 1950v Netherlands |
| Roger Bocquet | 29:188 | 10781 | 15 Oct 1950v Netherlands |
| Hans-Peter Friedlander | 29:342 | 10935 | 15 Oct 1950v Netherlands |
| Oliver Eggimann | 31:260 | 11583 | 15 Oct 1950v Netherlands |
| Alfred Bickel | 32:166 | 11854 | 15 Oct 1950v Netherlands |