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Bulgaria's youngest players during the 1965 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 |
|---|---|---|---|
| Simeon Simeonov | 18:217 | 6792 | 29 Nov 1964v USSR |
| Dimitar Penev | 19:140 | 7080 | 29 Nov 1964v USSR |
| Georgi Asparoukov | 21:209 | 7880 | 29 Nov 1964v USSR |
| Georgi Sokolov | 22:163 | 8199 | 29 Nov 1964v USSR |
| Stancho Bonchev | 23:15 | 8416 | 16 May 1965v Poland |
| Borislav Gaganelov | 23:53 | 8454 | 29 Nov 1964v USSR |
| Aleksandar Shalamanov | 23:86 | 8487 | 29 Nov 1964v USSR |
| Dimitar Yakimov | 23:140 | 8541 | 29 Nov 1964v USSR |
| Petar Velichkov | 24:113 | 8879 | 29 Nov 1964v USSR |
| Ivan Vutzov | 25:58 | 9190 | 10 Feb 1965v Greece |
| Nikola Kotkov | 25:355 | 9487 | 29 Nov 1964v USSR |
| Stoyan Kitov | 26:167 | 9664 | 10 Feb 1965v Greece |
| Alexandar D Kostov | 27:100 | 9962 | 13 Jun 1965v Israel |
| Ivan Dimitrov | 29:199 | 10792 | 29 Nov 1964v USSR |
| Vasil Metodiev | 30:123 | 11081 | 09 May 1965v Turkey |
| Stefan Abadzhiev | 30:222 | 11180 | 10 Feb 1965v Greece |
| Todor Diev | 30:305 | 11263 | 29 Nov 1964v USSR |
| Spiro Debarski | 30:356 | 11314 | 29 Nov 1964v USSR |