Stadium: Court 15 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/18 09:25 | Benjamin Pietri v Thomas Kostka | 6-3,6-2 |
| ITF M15 Heraklion | 2023/10/16 09:00 | Gian Luca Tanner v Thomas Kostka | 6-3,1-6,8-10 |
| ITF M15 Heraklion | 2023/10/15 08:30 | Evangelos Kypriotis v Thomas Kostka | 2-6,1-6 |
| ITF M25 Grasse | 2023/06/11 08:30 | Theo Herrmann v Thomas Kostka | 6-2,6-4 |
| ITF M15 Monastir | 2023/03/13 15:00 | Thomas Kostka v Zoran Ludoski | 3-6,2-6 |
| ITF M15 Monastir | 2023/03/13 08:30 | Linang Xiao v Thomas Kostka | 4-6,7-5,7-10 |
| ITF M25 Grasse | 2022/06/12 12:55 | Yann Marti v Thomas Kostka | 6-2,6-2 |
| ITF M15 Monastir | 2023/08/28 08:00 | Ilgiz Kamchibekov v Ighor Halmenschlager Reis | 2-6,6-3,10-8 |
| ITF M15 Monastir | 2023/08/27 08:00 | Savelii Shpita v Ighor Halmenschlager Reis | 3-6,6-7 |
| ITF M15 Monastir | 2023/08/20 08:00 | Ighor Halmenschlager Reis v Ilgiz Kamchibekov | 6-7,4-6 |
| ITF M15 Monastir | 2023/08/14 08:00 | Ighor Halmenschlager Reis v Dev Javia | 4-6,6-7 |
| ITF M15 Monastir | 2023/07/17 07:30 | Ighor Halmenschlager Reis v Toufik Sahtali | 6-7,4-6 |
| ITF M15 Monastir | 2023/07/03 08:30 | Ighor Halmenschlager Reis v Luc Koenig | 1-6,1-6 |
| ITF M15 Monastir | 2023/06/25 10:30 | Antoine Monaco v Ighor Halmenschlager Reis | 6-3,6-1 |
| ITF M15 Monastir | 2023/06/19 08:30 | Gabriele Thomas Brancatelli v Ighor Halmenschlager Reis | 7-5,6-3 |