| UTR Pro Tennis Series Portoroz | 2021/08/16 09:30 | George Botezan v Teodor Ureche | 6-0,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Olexiy Kolisnyk v Federico Zeballos | 2-6,6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Olexiy Kolisnyk v Jordi Mas De Ugarte | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 06:30 | Xavier Gabarro v Olexiy Kolisnyk | 3-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 13:00 | Markos Kalovelonis v Olexiy Kolisnyk | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/11 07:00 | Jaume Pla Malfeito v Olexiy Kolisnyk | 2-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 11:30 | Andrey Chepelev v Olexiy Kolisnyk | 2-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/08 08:30 | Olexiy Kolisnyk v Osgar O'Hoisin | 7-6,3-6,5-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 11:00 | Olexiy Kolisnyk v Marat Deviatiarov | 6-4,7-5 |