Stadium: Varela CenterCourt Round: 25 Ground: Clay
| ITF M15 Allershausen | 2023/08/31 09:55 | Justin Engel v Adrian Oetzbach | 7-6,4-6,4-6 |
| ITF M15 Allershausen | 2023/08/30 14:20 | Dennis Bloemke v Justin Engel | 4-6,1-6 |
| ITF M15 Uberlingen | 2023/08/16 13:10 | Jakob Schnaitter v Justin Engel | 7-6,6-1 |
| ITF M25 Wetzlar | 2023/08/01 12:40 | Justin Engel v Diego Dedura-Palomero | 5-7,2-6 |
| ITF M15 Uslar | 2023/07/19 09:55 | Juan C P Angelo v Justin Engel | 6-2,6-4 |
| ITF M15 Uslar | 2023/07/17 16:00 | Justin Engel v Noah Schlagenhauf | 6-3,6-0 |
| ITF M15 Uslar | 2023/07/17 08:00 | Andrea Gola v Justin Engel | 2-6,3-6 |
| ITF M25 Kassel | 2023/07/13 09:25 | Daniel Dutra Da Silva v Justin Engel | 6-1,6-3 |
| ITF M15 Vienna | 2023/09/01 11:25 | Gerald Melzer v John Sperle | 6-2,6-0 |
| ITF M15 Vienna | 2023/08/31 08:00 | John Sperle v Buvaysar Gadamauri | 6-1,6-2 |
| ITF M15 Vienna | 2023/08/30 09:50 | Paul Werren v John Sperle | 2-6,6-2,4-6 |
| ITF M15 Huy | 2023/08/25 15:30 | Buvaysar Gadamauri v John Sperle | 6-3,6-4 |
| ITF M15 Huy | 2023/08/25 12:20 | John Sperle v Stijn Slump | 6-3,7-6 |
| ITF M15 Huy | 2023/08/22 11:00 | John Sperle v Andrea Gola | 3-6,6-1,6-2 |
| ITF M25 Ystad | 2023/08/17 10:45 | John Sperle v Filip Cristian Jianu | 4-6,2-6 |
| ITF M25 Ystad | 2023/08/15 14:35 | John Sperle v Ethan Cook | 6-1,2-6,6-0 |