Stadion: Court 14 Round: 26 Ground: Carpet indoor
| ITF - M25 - Sarreguemines | 2023/10/25 08:00 | Nikolay Vylegzhanin v Jannik Opitz | 6-7,6-4,2-6 |
| ITF - M25 - Sarreguemines | 2023/10/23 12:05 | Jannik Opitz v Yanis Ghazouani Durand | 7-6,6-3 |
| ITF - M15 - Villers Les Nancy | 2023/10/18 10:45 | Alexis Gautier v Jannik Opitz | 1-6,6-3,6-2 |
| ITF - M15 - Trier | 2023/08/24 10:55 | Stepan Baum v Jannik Opitz | 6-2,6-2 |
| ITF - M15 - Trier | 2023/08/23 11:00 | David Eichenseher v Jannik Opitz | 6-4,6-7,4-6 |
| ITF - M25 - Wetzlar | 2023/08/03 08:00 | Niklas Schell v Jannik Opitz | 6-4,6-4 |
| ITF - M15 - Uslar | 2023/07/19 10:00 | Jannik Opitz v Esteban Bruna | 2-6,4-6 |
| Challenger - Braunschweig | 2023/07/09 12:40 | Daniel Masur v Jannik Opitz | 7-5,6-4 |
| ITF - M25 - Sarreguemines | 2023/10/24 07:50 | Jakob Schnaitter v Khumoyun Sultanov | 6-3,4-6,5-7 |
| Challenger - Hamburg | 2023/10/16 10:20 | Akira Santillan v Khumoyun Sultanov | 6-2,5-7,6-4 |
| Challenger - Hamburg | 2023/10/15 10:15 | Tuncay Duran v Khumoyun Sultanov | 4-6,4-6 |
| Davis Cup | 2023/09/17 13:05 | Joris De Loore v Khumoyun Sultanov | 6-3,6-4 |
| Davis Cup | 2023/09/16 11:55 | Kimmer Coppejans v Khumoyun Sultanov | 6-7,6-3,6-7 |
| Challenger - Istanbul | 2023/09/03 13:15 | Marsel Ilhan v Khumoyun Sultanov | 6-4,6-2 |
| ITF - M15 - Nakhon Si Thammarat | 2023/08/25 01:55 | Khumoyun Sultanov v Thanapet Chanta | 6-4,4-6,6-7 |
| ITF - M15 - Nakhon Si Thammarat | 2023/08/24 02:00 | Khumoyun Sultanov v Ryotaro Taguchi | 6-3,6-4 |