| ITF Bulgaria F1 | 2016/05/21 08:00 | Gabriel Donev v Alexander Lazov | 0-6,4-6 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/09 07:30 | Gabriel Donev v Oleksandr Bielinskyi | 3-6,6-7 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/08 09:54 | Gabriel Donev v Yanaki Milev | 6-4,1-6,6-3 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/07 12:00 | Gabriel Donev v Ioan Alexandru Chirita | 6-1,6-1 |
| UTR Pro Tennis Series Dubai | 2022/01/08 04:30 | Gabriel Donev v Filip Duda | 6-4,7-6 |
| UTR Pro Tennis Series Dubai | 2022/01/06 09:00 | Gabriel Donev v Gorazd Srbljak | 6-2,3-6,1-6 |
| UTR Pro Tennis Series Dubai | 2022/01/05 10:30 | Gabriel Donev v Johann Willems | 2-6,3-6 |
| UTR Pro Tennis Series Dubai | 2022/01/04 06:00 | Gabriel Donev v Vasile Antonescu | 4-6,6-3,1-5 |
| UTR Pro Tennis Series Dubai | 2022/01/03 04:30 | Gabriel Donev v Ilya Snitari | 4-6,3-6 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/09 07:30 | Ioan Alexandru Chirita v Alexander Lazov | 1-6,6-4,2-6 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/07 10:30 | Yanaki Milev v Alexander Lazov | 7-5,5-3 |
| UTR Pro Tennis Series Barcelona | 2022/02/02 14:00 | Alexander Lazov v Eduardo Cohen | 3-6,6-3,3-5 |
| UTR Pro Tennis Series Barcelona | 2022/02/01 15:04 | Alexander Lazov v Ivan Liutarevich | 1-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2022/01/31 08:00 | Roberto Ortega-Olmedo v Alexander Lazov | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/12/18 12:00 | Alexander Lazov v Xavier Matas Ortega | 2-6,2-4 |
| UTR Pro Tennis Series Barcelona | 2021/12/16 10:30 | Jordan Correia v Alexander Lazov | 7-6,2-1 |
| UTR Pro Tennis Series Barcelona | 2021/12/15 14:30 | Alexander Lazov v Akim Zarichanskyy | 6-0,6-1 |