| ITF M15 Lodz | 2025/07/08 11:01 | Igor Marcondes v Jakub Filip | 6-3,7-6 |
| ITF M25 Marburg | 2025/07/02 12:49 | Jakub Filip v Joao Eduardo Schiessl | 6-7,2-6 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/29 09:00 | Zdenek Kolar v Jakub Filip | 6-4,6-2 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/28 09:00 | Jakub Filip v Matyas Cerny | 6-0,1-0 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/27 09:30 | Nicolas Parizzia v Jakub Filip | 4-6,6-4,3-6 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/26 12:19 | Jan Hrazdil v Jakub Filip | 5-7,1-4 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/24 12:30 | Jeremy Gschwendtner v Jakub Filip | 1-6,4-6 |
| ITF M15 Saarlouis | 2025/06/19 09:30 | Jakub Filip v Niels Visker | 6-4,7-6 |
| ITF M15 Uslar | 2025/07/16 16:42 | Jannik Opitz v Adrian Oetzbach | 6-7,3-6 |
| Challenger Braunschweig | 2025/07/06 12:15 | Jannik Opitz v Toby Alex Kodat | 6-4,4-6,4-6 |
| ITF M25 Brussels | 2025/06/24 09:30 | David Tixhon v Jannik Opitz | 7-6,7-6 |
| ITF M25 Brussels | 2025/06/23 10:30 | James Wilkinson v Jannik Opitz | 0-6,1-6 |
| ITF M25 Sharm El Sheikh | 2025/04/16 09:30 | Jannik Opitz v Lorenzo Rottoli | 3-6,2-6 |
| ITF M25 Sharm El Sheikh | 2025/04/15 08:00 | Michael Zhu v Jannik Opitz | 5-7,7-5,0-1 |
| ITF M25 Sharm El Sheikh | 2025/04/14 09:30 | German Mingaleev v Jannik Opitz | 2-6,2-6 |
| ITF M25 Saint Dizier | 2025/03/24 10:00 | Jannik Opitz v Jan Jermar | 5-7,4-6 |