| Age category | 18-25 |
| Main hand | Right |
| Backhand | Two-handed |
| Racket | Yonex Ezone 100 |
| Plays since | 2025 |
| Favourite players | Andrey Rublev, Andy Murray |
| Country | Azerbaijan |
| Bweh | |
Heydar Huseynov
Latest matches results
May 2026
Group 4B
| Bruce Wu | 7 | 6 |
| Heydar Huseynov | 6 | 2 |
March 2026
Group 4C
| Farid Muradov | 0 |
| Heydar Huseynov [ret] | 0 |
March 2026
Group 4C
| Heydar Huseynov | 1 | 5 |
| Diego García Fontán | 6 | 6 |
March 2026
Group 4C
| Heydar Huseynov | 2 | 0 |
| Ramil Mammadli | 6 | 6 |
March 2026
Group 4C
| Heydar Huseynov | 0 | 0 |
| Salvatore Carotenuto | 6 | 6 |
January 2026
Group 5E
| Aydin Habibov | 4 | 6 | 0 |
| Heydar Huseynov | 6 | 2 | 6 |
January 2026
Group 5E
| Rashid Gafarov | 3 | 6 |
| Heydar Huseynov | 6 | 7 |
January 2026
Group 5E
| Kenan Hasimli | 4 | 1 |
| Heydar Huseynov | 6 | 6 |
January 2026
Group 5E
| Farhad Mansurov | 2 | 3 |
| Heydar Huseynov | 6 | 6 |