| ITF Turkey F22 | 2017/06/05 07:00 | Gabriel Donev v Koray Kirci | 6-1,6-4 |
| ITF Turkey F3 | 2017/01/22 07:00 | Gabriel Donev v Koray Kirci | 5-7,6-0,3-6 |
| UTR Pro Dubai | 2023/11/13 06:30 | Koray Kirci v Benedikt Henning | 3-6,7-5,0-6 |
| ITF M15 Doha | 2023/10/11 12:00 | Marat Sharipov v Koray Kirci | 6-2,6-1 |
| ITF M15 Doha | 2023/10/09 18:00 | Lasse Poertner v Koray Kirci | 6-3,4-6,2-6 |
| ITF M15 Doha | 2023/10/05 12:30 | Koray Kirci v Christian Sigsgaard | 6-7,1-6 |
| ITF M15 Sharm El Sheikh | 2023/09/27 10:40 | Daniel Ibragimov v Koray Kirci | 5-7,2-6 |
| ITF M25 Sharm El Sheikh | 2023/09/20 08:30 | Yanki Erel v Koray Kirci | 6-4,3-6,6-3 |
| Challenger Istanbul | 2023/09/06 09:35 | Denis Yevseyev v Koray Kirci | 6-2,7-6 |
| Challenger Istanbul | 2023/09/05 08:35 | Leo Borg v Koray Kirci | 1-6,6-3,3-6 |
| UTR Pro Dubai | 2023/11/13 08:40 | Gabriel Donev v Lazar Vojinovic | 7-5,6-1 |
| ITF M25 Pazardzhik | 2023/10/06 07:00 | Damien Wenger v Gabriel Donev | 5-7,6-4,7-6 |
| ITF M25 Pazardzhik | 2023/10/05 08:50 | Gabriel Donev v Sebastian Gima | 6-3,6-1 |
| ITF M25 Pazardzhik | 2023/10/03 09:50 | Denis Klok v Gabriel Donev | 0-6,0-6 |
| ITF M25 Pazardzhik | 2023/09/27 11:10 | Gabriel Donev v Clement Tabur | 2-6,6-3,1-6 |
| ITF M15 Kursumlijska Banja | 2023/09/21 09:25 | Andrey Chepelev v Gabriel Donev | 6-4,7-6 |
| ITF M15 Kursumlijska Banja | 2023/09/20 11:35 | Gabriel Donev v Dusan Obradovic | 7-5,6-2 |
| UTR Pro Sofia | 2023/09/10 07:00 | Petr Nesterov v Gabriel Donev | 7-6,3-0 |