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Switzerland's oldest 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 given in days, and in years and days, from their date of birth.
| Player | Age (Y:d) | Age (days) | Match |
|---|---|---|---|
| Alfred Bickel | 33:52 | 12106 | 24 Jun 1951v Yugoslavia |
| Oliver Eggimann | 32:77 | 11765 | 15 Apr 1951v West Germany |
| Hans-Peter Friedlander | 30:159 | 11117 | 15 Apr 1951v West Germany |
| Roger Bocquet | 30:75 | 11033 | 24 Jun 1951v Yugoslavia |
| Gerhard Lusenti | 30:60 | 11018 | 24 Jun 1951v Yugoslavia |
| Andre Neury | 29:254 | 10847 | 16 May 1951v Wales |
| Rene Bader | 28:321 | 10548 | 24 Jun 1951v Yugoslavia |
| Roger Quinche | 28:298 | 10525 | 16 May 1951v Wales |
| Charles Casali | 27:297 | 10159 | 18 Feb 1951v Spain |
| Adolphe Hug | 27:148 | 10010 | 18 Feb 1951v Spain |
| Willi Steffen | 26:98 | 9595 | 24 Jun 1951v Yugoslavia |
| Georges Stuber | 25:338 | 9470 | 15 Apr 1951v West Germany |
| Jacques Fatton | 25:186 | 9318 | 24 Jun 1951v Yugoslavia |
| Robert Ballaman | 25:2 | 9134 | 24 Jun 1951v Yugoslavia |
| Willy Kernen | 21:195 | 7866 | 18 Feb 1951v Spain |
| Charles Antenen | 21:193 | 7864 | 16 May 1951v Wales |
| Roger Vonlanthen | 20:201 | 7506 | 24 Jun 1951v Yugoslavia |