| UTR Pro Tennis Series Zadar | 2021/11/19 15:03 | Olexiy Kolisnyk v Vladimir Popov | 6-0,6-4 |
| UTR Pro Tennis Series Zadar | 2021/11/18 12:00 | Robert Rumler v Vladimir Popov | 6-2,5-1 |
| UTR Pro Tennis Series Zadar | 2021/11/16 12:00 | Valerii Naumenko v Vladimir Popov | 3-6,3-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 12:00 | Vladimir Popov v Duje Kekez | 0-6,2-6 |
| UTR Pro Tennis Series Brasov | 2021/10/28 11:30 | Vasile Antonescu v Vladimir Popov | 4-4 |
| UTR Pro Tennis Series Brasov | 2021/10/27 07:00 | Edris Fetisleam v Vladimir Popov | 6-0,5-2 |
| UTR Pro Tennis Series Brasov | 2021/10/25 10:00 | Ioan Alexandru Chirita v Vladimir Popov | 6-2,6-2 |
| UTR Pro Tennis Series Nis | 2021/10/10 08:00 | Christos Keisidis v Vladimir Popov | 6-1,5-2 |
| UTR Pro Tennis Series Barcelona | 2021/11/22 08:00 | Kuzey Cekirge v Vlad Cristian Breazu | 7-5,4-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/14 08:00 | Benjamin Dhoe v Vlad Cristian Breazu | 6-1,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/13 13:00 | Jan Dimitrijevic v Vlad Cristian Breazu | 7-5,0-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/12 17:30 | Diego F Flores v Vlad Cristian Breazu | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/12 14:30 | Xavier Gabarro v Vlad Cristian Breazu | 4-6,1-3 |
| UTR Pro Tennis Series Barcelona | 2021/11/08 08:00 | David Redondo v Vlad Cristian Breazu | 5-7,4-5 |
| ITF M25 Setubal | 2021/10/04 14:15 | Vlad Cristian Breazu v Gian Luca Tanner | 6-2,1-6,6-10 |
| ITF M25 Setubal | 2021/10/03 14:00 | Luca Teboul v Vlad Cristian Breazu | 4-6,1-6 |