| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Kolisnyk, Olexiy v Mas de Ugarte, Jordi | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 06:30 | Gabarro, Xavier v Kolisnyk, Olexiy | 3-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 13:00 | Kalovelonis, Markos v Kolisnyk, Olexiy | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/11 07:00 | Pla Malfeito, Jaume v Kolisnyk, Olexiy | 2-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 11:30 | Andrey Chepelev v Kolisnyk, Olexiy | 2-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/08 08:30 | Kolisnyk, Olexiy v Osgar O'Hoisin | 7-6,3-6,5-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 11:00 | Kolisnyk, Olexiy v Deviatiarov, Marat | 6-4,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 07:00 | Kolisnyk, Olexiy v Daniel Sancho Arbizu | 6-4,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Federico Zeballos v Bielinskyi, Oleksandr | 6-0,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 08:00 | Pujol Navarro, Bruno v Federico Zeballos | 1-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 08:30 | Luc Fomba v Federico Zeballos | 7-5,5-3 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 11:00 | Deviatiarov, Marat v Federico Zeballos | 5-7,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 08:30 | Kuzey Cekirge v Federico Zeballos | 6-4,4-6,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 11:30 | Federico Zeballos v Carretero, Pablo | 6-0,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/04 07:00 | Federico Zeballos v Guerrero Melgar, Angel | 6-4,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 08:30 | Federico Zeballos v Deviatiarov, Marat | 7-6,6-4 |