| 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 Beograd | 2021/07/05 07:30 | Michalis Sakellaridis v Olexiy Kolisnyk | 3-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 06:00 | Anthony Genov v Yanais Laurent | 0-6,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 09:00 | Yanais Laurent v Dmitrii Vasilev | 2-6,6-2,6-3 |
| UTR Pro Tennis Series Beograd | 2021/07/11 07:00 | Yanais Laurent v Nikola Slavic | 3-6,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/09 12:00 | Yanais Laurent v Luka Pavlovic | 3-6,2-5 |
| UTR Pro Tennis Series Beograd | 2021/07/08 07:30 | Yanais Laurent v Bogdan Borza | 6-1,3-6,2-6 |
| UTR Pro Tennis Series Beograd | 2021/07/07 09:00 | Petar Teodorovic v Yanais Laurent | 2-6,1-6 |
| UTR Pro Tennis Series Beograd | 2021/07/06 10:30 | Luka Todorovic v Yanais Laurent | 1-6,0-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/06 06:00 | Yanais Laurent v Valentin Vanta | 2-6,1-5 |