| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Jip Van Assendelft v Michiel de Krom | 2-6,6-2,1-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/07 09:00 | Benjamin Dhoe v Jip Van Assendelft | 3-6,4-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/06 16:00 | Nathan De Veer v Jip Van Assendelft | 2-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 09:00 | Jip Van Assendelft v Lawrence Bataljin | 7-6,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/11/04 12:00 | Jip Van Assendelft v Johann Willems | 3-6,2-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/03 09:00 | Miko Wassermann v Jip Van Assendelft | 1-6,4-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/02 10:30 | Guy Den Heijer v Jip Van Assendelft | 6-4,5-2 |
| ITF M25 Hamburg | 2021/10/17 07:55 | Romain Faucon v Jip Van Assendelft | 1-6,6-1,11-9 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Jannis Kahlke v Guy Den Heijer | 7-6,5-7,3-5 |
| ITF M15 Marburg | 2019/07/08 09:00 | Valentin Guenther v Jannis Kahlke | 6-4,6-2 |
| ITF M15 Marburg | 2019/07/08 07:00 | Jan Soeren Hain v Jannis Kahlke | 6-7,4-6 |
| ITF M15 Kaarst | 2019/02/04 08:30 | Daniel De Jonge v Jannis Kahlke | 7-5,6-4 |
| ITF M15 Sharm El Sheikh | 2019/01/21 09:30 | Kacper Zuk v Jannis Kahlke | 7-5,6-0 |
| ITF Egypt F28 | 2018/11/22 09:15 | Jannis Kahlke v Mohamed Aziz Dougaz | 2-6,6-7 |
| ITF Egypt F28 | 2018/11/21 13:10 | Jannis Kahlke v Jan Vehovec | 6-0,6-0 |
| ITF Egypt F28 | 2018/11/19 08:00 | Tom Pisane v Jannis Kahlke | 3-6,4-6 |