| UTR Pro Tennis Series Pazardzhik | 2021/07/15 07:30 | Olexiy Kolisnyk v Yanais Laurent | 6-4,3-6,6-4 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 10:30 | Anthony Genov v Olexiy Kolisnyk | 1-4 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 06:00 | Adriano Dzhenev v Olexiy Kolisnyk | 1-6,2-6 |
| UTR Pro Tennis Series Beograd | 2021/07/11 08:30 | Olexiy Kolisnyk v Jean Thirouin | 7-6,3-6,3-5 |
| UTR Pro Tennis Series Beograd | 2021/07/10 11:30 | Olexiy Kolisnyk v Luka Pavlovic | 4-6,6-1,6-2 |
| UTR Pro Tennis Series Beograd | 2021/07/09 07:30 | Constant De La Bassetiere v Olexiy Kolisnyk | 6-7,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/08 09:00 | Nikola Slavic v Olexiy Kolisnyk | 1-6,4-6 |
| UTR Pro Tennis Series Beograd | 2021/07/07 10:30 | Dusan Obradovic v Olexiy Kolisnyk | 6-0,5-4 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 07:58 | Plamen Milushev v Dmitrii Vasilev | 6-1,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 10:30 | Adriano Dzhenev v Dmitrii Vasilev | 6-1,7-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 09:00 | Yanais Laurent v Dmitrii Vasilev | 2-6,6-2,6-3 |
| ITF M15 Sofia | 2021/07/07 06:50 | Dmitrii Vasilev v Leonid Sheyngezikht | 0-6,2-6 |
| ITF M15 Antalya | 2021/06/13 07:30 | Pietro Marino v Dmitrii Vasilev | 6-1,6-1 |
| ITF M15 Antalya | 2021/06/07 13:25 | Daniel Antonio Nunez v Dmitrii Vasilev | 6-1,6-1 |
| ITF M15 Skopje | 2021/06/06 13:30 | Dmitrii Vasilev v Taiyo Yamanaka | 3-6,6-7 |
| ITF M15 Antalya | 2021/06/06 07:30 | Dmitrii Vasilev v Efe Comu | 6-3,6-7,10-8 |