Stadium: Centre Court Round: 25 Ground: Clay
| Challenger Karlsruhe | 2023/07/02 11:40 | Justin Engel v Carlos Sanchez Jover | 6-0,3-6,3-6 |
| ITF M15 Oberhaching | 2023/02/12 09:00 | Justin Engel v Michael Gloeckler | 4-6,3-6 |
| ITF M15 Antalya | 2022/10/24 10:30 | Nicolas Parizzia v Justin Engel | 6-0,6-2 |
| ITF M15 Antalya | 2022/10/23 07:00 | Justin Engel v Umut Kaan Yenilmez | 6-3,6-1 |
| ITF M15 Antalya | 2022/10/19 10:10 | Justin Engel v Marsel Ilhan | 4-6,4-6 |
| Challenger Ismaning | 2022/10/09 12:55 | Justin Engel v Martin Krumich | 4-6,6-3,3-6 |
| ITF M15 Allershausen | 2022/08/31 10:40 | Marvin Netuschil v Justin Engel | 7-6,6-4 |
| ITF M15 Trier | 2022/08/24 15:30 | Quentin Folliot v Justin Engel | 6-0,6-2 |
| ITF M25 Marburg | 2023/07/04 11:55 | Hazem Naw v Martin Krumich | 4-6,2-6 |
| ITF M15 Kamen | 2023/06/30 10:30 | Svyatoslav Gulin v Hazem Naw | 6-2,6-1 |
| ITF M15 Kamen | 2023/06/29 11:30 | Niklas Schell v Hazem Naw | 1-6,0-6 |
| ITF M15 Kamen | 2023/06/28 10:40 | Piet Steveker v Hazem Naw | 3-6,1-6 |
| ITF M15 Saarlouis | 2023/06/23 10:00 | Hazem Naw v Joao Fonseca | 6-7,5-7 |
| ITF M15 Saarlouis | 2023/06/22 09:00 | Hazem Naw v Dylan Dietrich | 6-2,6-0 |
| ITF M15 Saarlouis | 2023/06/20 13:00 | Mats Rosenkranz v Hazem Naw | 4-6,4-6 |
| ITF M15 Tehran | 2023/06/10 06:30 | Alexander Stater v Hazem Naw | 1-6,6-1,6-2 |