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Bulgaria's youngest players during the 1967 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 |
|---|---|---|---|
| Hristo Bonev | 20:47 | 7352 | 22 Mar 1967v West Germany |
| Simeon Simeonov | 20:194 | 7499 | 06 Nov 1966v Yugoslavia |
| Asparuh Nikodimov | 21:76 | 7747 | 06 Nov 1966v Yugoslavia |
| Dimitar Penev | 21:116 | 7787 | 06 Nov 1966v Yugoslavia |
| Petar Zhekov | 22:26 | 8062 | 06 Nov 1966v Yugoslavia |
| Stoian Aleksiev | 22:125 | 8161 | 06 Nov 1966v Yugoslavia |
| Georgi Popov | 22:331 | 8367 | 11 Jun 1967v Sweden |
| Ivan Davidov | 23:32 | 8433 | 06 Nov 1966v Yugoslavia |
| Vassil Mitkov | 23:285 | 8686 | 29 Jun 1967v Norway |
| Georgi Asparoukov | 23:322 | 8723 | 22 Mar 1967v West Germany |
| Dobromir Zhechev | 23:359 | 8760 | 06 Nov 1966v Yugoslavia |
| Borislav Gaganelov | 25:29 | 9161 | 06 Nov 1966v Yugoslavia |
| Aleksandar Shalamanov | 25:62 | 9194 | 06 Nov 1966v Yugoslavia |
| Dinko Dermendjiev | 25:156 | 9288 | 06 Nov 1966v Yugoslavia |
| Dimitar Yakimov | 25:252 | 9384 | 22 Mar 1967v West Germany |
| Nikola Tzanev | 26:330 | 9827 | 06 Nov 1966v Yugoslavia |
| Aleksandar Vasilev | 30:170 | 11128 | 06 Nov 1966v Yugoslavia |
| Ivan Dimitrov | 31:312 | 11635 | 22 Mar 1967v West Germany |