Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF Kazakhstan F1 | 2018/02/12 07:35 | Vasil Kirkov v Sergey Fomin | 0-6,6-7 |
| ITF M25 - Jönköping | 2021/09/21 10:45 | Renta Tokuda v Sergey Fomin | 6-4,6-4 |
| Challenger Nur-Sultan | 2021/07/11 08:45 | Andrey Kuznetsov v Sergey Fomin | 6-3,6-1 |
| ITF M25 - Nur-Sultan | 2021/07/07 04:00 | Beibit Zhukayev v Sergey Fomin | 7-6,7-6 |
| ITF M15 - Shymkent | 2021/05/27 05:00 | Alexander Shevchenko v Sergey Fomin | 6-2,6-1 |
| ITF M15 - Shymkent | 2021/05/26 04:00 | Sergey Fomin v Bulat Galiev | 6-4,7-6 |
| ITF M15 - Antalya | 2021/05/11 08:25 | Mick Veldheer v Sergey Fomin | 6-7,6-2,6-1 |
| ITF M15 - Shymkent | 2021/04/08 07:25 | Sergey Fomin v Andrey Chepelev | 7-6,7-5 |
| ITF M15 - Shymkent | 2021/04/07 08:05 | Sergey Fomin v Zhanger Almashev | 6-1,6-2 |
| ITF M25 - Plaisir | 2021/09/17 11:30 | Thomas Laurent v Vasil Kirkov | 6-7,1-6 |
| ITF M25 - Plaisir | 2021/09/16 07:55 | Vasil Kirkov v Marvin Moeller | 2-6,7-6,7-6 |
| ITF M25 - Plaisir | 2021/09/14 10:35 | Vasil Kirkov v Melvin Manuel | 6-4,6-2 |
| Challenger Banja Luka | 2021/09/05 10:50 | Vasil Kirkov v Mircea-Alexandru Jecan | 4-6,4-6 |
| ITF M15 - Ulcinj | 2021/09/02 10:10 | Ignacio Carou v Vasil Kirkov | 3-6,6-1,6-4 |
| ITF M15 - Ulcinj | 2021/08/31 10:20 | Luca Teboul v Vasil Kirkov | 1-6,1-6 |
| ITF M15 - Bratislava | 2021/08/28 08:55 | Mate Valkusz v Vasil Kirkov | 7-5,6-4 |
| ITF M15 - Bratislava | 2021/08/27 08:00 | Vasil Kirkov v Biagio Gramaticopolo | 7-5,6-1 |