Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2023/11/10 09:00 | Juan Bautista Otegui v Tom Gentzsch | 6-3,6-4 |
| ITF M15 Monastir | 2023/11/09 08:30 | Nicolas Kobelt v Tom Gentzsch | 5-7,1-6 |
| ITF M15 Monastir | 2023/11/08 10:25 | Nazim Makhlouf v Tom Gentzsch | 3-6,3-6 |
| Challenger Ismaning | 2023/10/30 14:15 | Andrew Paulson v Tom Gentzsch | 3-6,7-6,7-6 |
| Challenger Ismaning | 2023/10/29 15:50 | Tom Gentzsch v Elmar Ejupovic | 7-6,7-6 |
| ITF M15 Monastir | 2023/10/20 08:30 | Mohamed Aziz Dougaz v Tom Gentzsch | 6-1,6-4 |
| ITF M15 Monastir | 2023/10/19 08:00 | Samir Hamza Reguig v Tom Gentzsch | 2-6,4-6 |
| ITF M15 Monastir | 2023/10/17 10:05 | Yuta Kikuchi v Tom Gentzsch | 2-6,6-7 |
| ITF M15 Monastir | 2023/11/13 10:00 | Nikola Basic v Max Van Nunen | 6-2,6-0 |
| ITF M15 Telavi | 2023/10/25 11:10 | Gianluca Cadenasso v Nikola Basic | 7-6,6-1 |
| ITF M25 Telavi | 2023/10/16 06:00 | Nikola Basic v Maxence Bertimon | 4-6,3-6 |
| ITF M15 Bad Waltersdorf | 2023/10/01 09:00 | Nikola Basic v Aljaz Jeran | 5-7,3-6 |
| ITF M25 Zlatibor | 2023/09/28 11:05 | Marko Topo v Nikola Basic | 6-1,6-4 |
| ITF M25 Zlatibor | 2023/09/27 10:20 | Nikola Basic v Aleksandar Mihailovic | 6-4,7-6 |
| ITF M25 Zlatibor | 2023/09/27 07:00 | Nikola Basic v Nikola Kijac | 6-2,6-3 |
| ITF M25 Zlatibor | 2023/09/26 09:30 | Nikola Basic v Jacques-Kai Inoue | 6-3,6-0 |