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Czechoslovakia's oldest players during the 1931 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 |
|---|---|---|---|
| Josef Silny | 29:140 | 10733 | 13 Jun 1931v Switzerland |
| Ladislav Zenisek | 27:35 | 9897 | 12 Apr 1931v Austria |
| Frantisek Planicka | 26:313 | 9810 | 12 Apr 1931v Austria |
| Jaroslav Burgr | 25:98 | 9230 | 14 Jun 1931v Poland |
| Josef Ctyroky | 24:256 | 9022 | 13 Jun 1931v Switzerland |
| Frantisek Svoboda | 24:250 | 9016 | 12 Apr 1931v Austria |
| Frantisek Junek | 24:85 | 8851 | 12 Apr 1931v Austria |
| Oldrich Nejedly | 21:169 | 7840 | 14 Jun 1931v Poland |
| Ferdinand Daucik | 21:14 | 7685 | 14 Jun 1931v Poland |