Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Saint Dizier | 2021/10/31 12:00 | Arthur Gea v Adrian Oetzbach | 6-3,4-6,11-9 |
| ITF M15 Doha | 2021/10/20 12:30 | Adrian Oetzbach v Tibo Colson | 3-6,3-6 |
| ITF M15 Doha | 2021/10/13 18:40 | Aleksandre Bakshi v Adrian Oetzbach | 5-7,7-5,6-3 |
| ITF M15 Doha | 2021/10/12 12:30 | Zura Tkemaladze v Adrian Oetzbach | 2-6,5-7 |
| ITF M15 Doha | 2021/10/11 12:30 | Bharath Nishok Kumaran v Adrian Oetzbach | 3-6,1-6 |
| ITF M15 Doha Qual | 2021/10/10 17:00 | Ali Alyafei v Adrian Oetzbach | 2-6,0-6 |
| ITF M15 Cairo | 2021/09/21 08:00 | Adrian Oetzbach v Karan Singh | 6-3,4-6,5-10 |
| ITF M15 Cairo | 2021/09/20 09:00 | Volodymyr Uzhylovskyi v Adrian Oetzbach | 6-4,0-6,6-10 |
| ITF M15 Sharm El Sheikh | 2021/10/31 07:00 | Petar Teodorovic v Haoyuan Huang | 5-7,3-6 |
| UTR Pro Tennis Series Nis | 2021/10/09 08:00 | Petar Teodorovic v Petar Pjevcevic | 6-7,4-5 |
| UTR Pro Tennis Series Nis | 2021/10/08 14:15 | Petar Teodorovic v Denys Klok | 7-5,6-0 |
| UTR Pro Tennis Series Nis | 2021/10/06 07:00 | Petar Teodorovic v Andrey Chepelev | 4-6,3-6 |
| UTR Pro Tennis Series Nis | 2021/10/05 07:30 | Petar Teodorovic v Egor Novikov | 6-1,6-4 |
| UTR Pro Tennis Series Nis | 2021/10/04 07:00 | Aleksandar Ljubojevic v Petar Teodorovic | 4-6,3-6 |
| ITF M15 Pirot | 2021/09/21 14:55 | Savva Polukhin v Petar Teodorovic | 6-2,6-2 |
| ITF M15 Zlatibor | 2021/09/15 08:00 | Petar Teodorovic v Peter Nagy | 4-6,2-6 |