| UTR Pro Tennis Series - Miami | 2021/11/01 15:00 | Wyatt DeMulling v Mark Wallner | 2-6,1-5 |
| UTR Pro Tennis Series - Mülheim | 2021/07/31 10:00 | Mark Wallner v Hendrik Jebens | 1-6,4-6 |
| UTR Pro Tennis Series - Mülheim | 2021/07/30 12:33 | Mark Wallner v Stefan Peter Hampe | 6-3,5-1 |
| UTR Pro Tennis Series - Mülheim | 2021/07/29 13:30 | Mark Wallner v Guy Den Heijer | 2-6,3-6 |
| UTR Pro Tennis Series - Mülheim | 2021/07/28 11:00 | Mark Wallner v Tim Sandkaulen | 6-7,5-6 |
| UTR Pro Tennis Series - Mülheim | 2021/07/27 09:30 | Mark Wallner v Matthew Thomson | 7-6,7-6 |
| UTR Pro Tennis Series - Mülheim | 2021/07/26 11:00 | Billy Harris v Mark Wallner | 7-6,7-6 |
| UTR Pro Tennis Series - Nis | 2021/10/09 09:58 | Oleksandr Bielinskyi v George Botezan | 6-7,6-4,6-2 |
| UTR Pro Tennis Series - Nis | 2021/10/08 18:15 | George Botezan v Alexander Lazov | 2-6,3-5 |
| UTR Pro Tennis Series - Nis | 2021/10/07 08:30 | George Botezan v Christos Keisidis | 6-3,6-3 |
| UTR Pro Tennis Series - Nis | 2021/10/06 11:30 | Aleksa Mardjonovic v George Botezan | 6-4,5-3 |
| 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 |