Stadium: Indoor 3 Round: 62 Ground: Clay
| ITF M15 Antalya | 2023/03/15 09:30 | Joel Schwaerzler v Leopold Zima | 6-2,6-2 |
| ITF M15 Antalya | 2023/03/14 10:00 | Leopold Zima v Berk Ilkel | 6-2,6-2 |
| ITF M15 Antalya | 2023/03/13 15:05 | Leopold Zima v Yuquan Jin | 6-2,6-1 |
| ITF M15 Antalya | 2023/03/12 10:30 | Leopold Zima v Tomi Van den Ham | 6-3,6-0 |
| ITF M25 Quinta Do Lago | 2023/03/10 11:25 | Jesper De Jong v Leopold Zima | 3-6,6-2,10-5 |
| ITF M25 Quinta Do Lago | 2023/03/09 17:05 | Leopold Zima v Mikel Martinez | 6-3,6-2 |
| ITF M25 Quinta Do Lago | 2023/03/08 15:00 | Leopold Zima v Goncalo Falcao | 6-1,6-3 |
| ITF M25 Quinta Do Lago | 2023/03/07 13:30 | Leopold Zima v Tushar Sharma | 6-1,6-1 |
| ITF M15 Heraklion | 2023/03/19 07:00 | Niklas Koch v Raz Katz | 2-6,6-7 |
| ITF M25 Heraklion | 2023/03/13 08:00 | Nikolay Nedelchev v Niklas Koch | 6-1,6-1 |
| ITF M25 Nussloch | 2023/01/23 09:00 | Niklas Koch v Jannik Opitz | 3-6,4-6 |
| ITF M15 Trier | 2022/08/22 08:00 | Joshua Schaefer v Niklas Koch | 5-7,4-6 |
| UTR Pro Tennis Series Blaricum | 2022/04/05 12:30 | Zachary Eisinga v Niklas Koch | 5-1 |
| UTR Pro Tennis Series Blaricum | 2022/04/04 13:30 | Twan Van Zijl v Niklas Koch | 6-1,6-1 |
| UTR Pro Tennis Series Amsterdam | 2022/03/05 12:00 | Olivier Rojas v Niklas Koch | 3-6,6-1,5-4 |
| UTR Pro Tennis Series Amsterdam | 2022/03/04 09:00 | Jurriaan Bol v Niklas Koch | 6-4,1-6,6-3 |