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Bulgaria's youngest players during the 1969 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 |
|---|---|---|---|
| Stefan Aladzhov | 21:187 | 7858 | 23 Apr 1969v Luxembourg |
| Hristo Bonev | 21:248 | 7919 | 09 Oct 1968v Turkey |
| Simeon Simeonov | 22:166 | 8202 | 09 Oct 1968v Turkey |
| Kiril Ivkov | 22:337 | 8373 | 24 May 1969v Italy |
| Milko Gaydarski | 23:67 | 8468 | 24 May 1969v Italy |
| Dimitar Penev | 23:89 | 8490 | 09 Oct 1968v Turkey |
| Petar Zhekov | 24:62 | 8828 | 11 Dec 1968v England |
| Georgi Popov | 24:87 | 8853 | 09 Oct 1968v Turkey |
| Vassil Mitkov | 25:40 | 9172 | 27 Oct 1968v Netherlands |
| Georgi Asparoukov | 25:176 | 9308 | 27 Oct 1968v Netherlands |
| Dobromir Zhechev | 25:331 | 9463 | 09 Oct 1968v Turkey |
| Todor Kolev | 26:163 | 9660 | 09 Oct 1968v Turkey |
| Borislav Gaganelov | 27:2 | 9864 | 09 Oct 1968v Turkey |
| Aleksandar Shalamanov | 27:53 | 9915 | 27 Oct 1968v Netherlands |
| Dimitar Yakimov | 27:89 | 9951 | 09 Oct 1968v Turkey |
| Dinko Dermendjiev | 27:129 | 9991 | 09 Oct 1968v Turkey |
| Nikola Kotkov | 29:322 | 10915 | 27 Oct 1968v Netherlands |
| Ivan Dimitrov | 33:148 | 12202 | 09 Oct 1968v Turkey |