Stadium: Center Court Round: 25 Ground: Clay
| ITF M25 Klosters | 2023/07/06 11:45 | Benjamin Lock v Leopold Zima | 6-3,6-7,6-2 |
| ITF M25 Cattolica | 2023/06/21 12:00 | Leopold Zima v Julian Ocleppo | 6-7,0-6 |
| ITF M25 Cattolica | 2023/06/20 13:40 | Leopold Zima v Marco De Rossi | 6-3,4-6,6-2 |
| ITF M25 Cordoba | 2023/06/05 16:00 | Leopold Zima v Sam K Baumgartner | 6-4,6-2 |
| ITF M25 Cordoba | 2023/06/05 07:00 | Leopold Zima v Artem Alekseychuk | 7-6,6-1 |
| ITF M25 Cordoba | 2023/06/04 11:00 | Leopold Zima v Hillel Rousseau | 6-1,6-2 |
| ITF M15 Meerbusch | 2023/04/25 08:00 | Leopold Zima v Yvo Panak | 4-6,7-5,2-10 |
| ITF M15 Meerbusch | 2023/04/24 10:00 | Leopold Zima v Niklas Koch | 6-4,7-5 |
| ITF M15 Monastir | 2023/07/12 10:25 | Yassine Smiej v Yannik Kelm | 6-4,7-5 |
| ITF M25 Marburg | 2023/07/04 16:40 | Timo Stodder v Yannik Kelm | 6-2,6-4 |
| ITF M15 Kamen | 2023/06/29 13:00 | Yannik Kelm v Niels Visker | 6-2,4-6,4-6 |
| ITF M15 Kamen | 2023/06/28 13:00 | Yannik Kelm v Dominik Boehler | 6-3,6-3 |
| ITF M15 Saarlouis | 2023/06/20 11:35 | Yannik Kelm v Sander Jong | 1-6,0-6 |
| ITF M25 Nussloch | 2023/01/24 11:45 | Yannik Kelm v Peter Heller | 5-7,2-6 |
| Challenger Heilbronn | 2022/05/08 11:35 | Sumit Nagal v Yannik Kelm | 6-2,6-1 |