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Bulgaria's youngest players during the 1959 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 |
|---|---|---|---|
| Georgi Sokolov | 16:328 | 6172 | 13 May 1959v Netherlands |
| Stoyan Kitov | 20:259 | 7564 | 13 May 1959v Netherlands |
| Aleksander Vasilev | 22:194 | 8230 | 13 May 1959v Netherlands |
| Dimitar Largov | 22:215 | 8251 | 13 May 1959v Netherlands |
| Dimitar Kostov | 22:290 | 8326 | 13 May 1959v Netherlands |
| Ivan Dimitrov | 23:144 | 8545 | 05 Oct 1958v East Germany |
| Hristo Lazarov | 23:191 | 8592 | 31 May 1959v Yugoslavia |
| Nikola Kovachev | 24:123 | 8889 | 05 Oct 1958v East Germany |
| Todor Diev | 24:250 | 9016 | 05 Oct 1958v East Germany |
| Spiro Debarski | 24:301 | 9067 | 05 Oct 1958v East Germany |
| Stefan Abadzhiev | 24:314 | 9080 | 13 May 1959v Netherlands |
| Kiril Rakarov | 26:133 | 9630 | 05 Oct 1958v East Germany |
| Iliya Kirchev | 26:153 | 9650 | 31 May 1959v Yugoslavia |
| Georgi Naydenov | 26:288 | 9785 | 05 Oct 1958v East Germany |
| Panayot Panayotov | 27:279 | 10141 | 05 Oct 1958v East Germany |
| Ivan Kolev | 27:338 | 10200 | 05 Oct 1958v East Germany |
| Bozhidar Mitkov | 29:45 | 10638 | 31 May 1959v Yugoslavia |
| Manol Manolov | 33:57 | 12111 | 05 Oct 1958v East Germany |