Stadium: Court 2 Round: 25 Ground: Clay
| ITF - M15 Antalya | 2021/11/09 06:25 | Marlon Vankan v Jannik Opitz | 4-6,2-6 |
| ITF - M15 Antalya | 2021/11/08 09:15 | Jannik Opitz v Facundo Yunis | 7-6,6-3 |
| ITF - M15 Antalya | 2021/10/31 07:00 | Jannik Opitz v Admir Kalender | 6-4,3-6,8-10 |
| Challenger Braunschweig Qual | 2017/07/08 08:00 | Jannik Opitz v Alexander Mannapov | 3-6,6-4,2-6 |
| ITF Germany F4 | 2016/06/18 12:30 | David Eisenzapf v Jannik Opitz | 6-2,6-1 |
| ITF Germany F16 | 2015/10/14 10:15 | Mats Moraing v Jannik Opitz | 6-3,6-1 |
| ITF - M15 Antalya | 2021/11/04 06:30 | Bastian Malla v Sergey Fomin | 6-2,6-2 |
| ITF - M15 Antalya | 2021/11/03 10:55 | Rrezart Cungu v Sergey Fomin | 6-7,4-6 |
| ITF M25 Nur-Sultan | 2021/10/28 04:55 | Sergey Fomin v Khumoyun Sultanov | 6-7,0-6 |
| ITF M25 Nur-Sultan | 2021/10/27 08:00 | Artur Khairutdinov v Sergey Fomin | 1-6,2-6 |
| ITF M25 Nur-Sultan | 2021/10/21 07:45 | Eric Vanshelboim v Sergey Fomin | 6-3,6-1 |
| ITF M25 Nur-Sultan | 2021/10/20 05:05 | Sergey Fomin v Daniil Felker | 6-2,6-1 |
| ITF M15 - Kazan | 2021/10/14 10:05 | Sergey Fomin v Egor Agafonov | 6-7,6-3,4-6 |
| ITF M15 - Kazan | 2021/10/13 13:25 | Sergey Fomin v Konstantin Zhzhenov | 7-5,6-4 |