| UTR Pro Tennis Series Nis | 2021/10/05 14:00 | Aleksa Mardjonovic v Christos Keisidis | 2-6,7-5,6-4 |
| UTR Pro Tennis Series Nis | 2021/10/04 10:00 | Aleksa Mardjonovic v Dusan Trunic | 6-3,6-2 |
| ITF M15 Pirot | 2021/09/21 12:25 | Aleksa Mardjonovic v Kristijan Juhas | 2-6,4-6 |
| ITF M15 Pirot | 2021/09/20 11:00 | Paul Valsecchi v Aleksa Mardjonovic | 4-6,6-4,6-10 |
| ITF M15 Pirot | 2021/09/19 12:30 | Dusan Trunic v Aleksa Mardjonovic | 4-6,6-2,7-10 |
| ITF M15 Zlatibor | 2021/09/15 13:20 | Aleksa Mardjonovic v Petar Pjevcevic | 6-1,3-6,3-6 |
| ITF M15 Ulcinj | 2021/09/05 07:30 | Aleksa Mardjonovic v Alessandro Procopio | 7-6,4-6,6-10 |
| ITF M15 Ulcinj | 2021/08/30 13:30 | Pietro Marino v Aleksa Mardjonovic | 6-4,7-6 |
| UTR Pro Tennis Series Nis | 2021/10/05 13:00 | Dusan Trunic v George Botezan | 2-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/10/02 13:00 | George Botezan v Alvaro Bueno Gil | 0-0 |
| UTR Pro Tennis Series Barcelona | 2021/10/01 09:30 | George Botezan v Noah Lopez | 2-6,0-0 |
| UTR Pro Tennis Series Barcelona | 2021/09/30 09:30 | George Botezan v Ervin H Eminefendic | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/09/29 08:00 | Fermin Calvo Barcelo v George Botezan | 6-0,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/09/28 11:00 | Pol Fernandez v George Botezan | 6-4,6-7,4-5 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 08:30 | George Botezan v Thijmen Loof | 1-6,0-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/24 13:30 | George Botezan v Julien De Cuyper | 6-4,6-1 |