Stadium: Hard Court 4 Round: 62 Ground: Hardcourt outdoor
| 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 M25 Falun | 2023/09/26 12:00 | Adam Heinonen v Evgeny Karlovskiy | 6-7,1-6 |
| ITF M25 Falun | 2023/09/25 08:00 | Adam Heinonen v Jack Karlsson Winstrand | 6-1,6-3 |
| ITF M25 Falun | 2023/09/24 07:55 | Adam Heinonen v Linus Videhult | 6-3,6-3 |
| ITF M15 Danderyd | 2023/09/19 12:00 | Adam Heinonen v Jakob Schnaitter | 2-6,2-6 |
| ITF M25 Ystad | 2023/08/15 12:25 | Marvin Moeller v Adam Heinonen | 6-2,6-7,7-5 |
| ITF M15 Hyvinkaa | 2023/08/04 09:00 | Adam Heinonen v Leonardo Rossi | 4-6,3-6 |
| ITF M15 Hyvinkaa | 2023/08/02 15:00 | Adam Heinonen v Niccolo Catini | 6-1,6-2 |
| ITF M15 Hyvinkaa | 2023/08/01 07:00 | Adam Heinonen v Robin Erik Parts | 6-2,4-6,10-5 |