Stadium: Court 05 Round: 44 Ground: Clay
| ITF M15 - Warmbad-Villach | 2023/05/21 10:00 | Kai Lemstra v Ivan Kremenchutskyi | 6-1,6-0 |
| ITF M15 - Telde | 2023/04/22 09:00 | Kai Lemstra v Marcel Zielinski | 2-6,4-6 |
| ITF M15 - Telde | 2023/04/21 09:00 | Kai Lemstra v Ignacio Buse | 6-4,6-2 |
| ITF M15 - Telde | 2023/04/20 10:30 | Alberto Barroso Campos v Kai Lemstra | 5-7,6-3,1-6 |
| ITF M15 - Telde | 2023/04/19 11:00 | Noah Lopez v Kai Lemstra | 6-7,4-6 |
| ITF M15 - Telde | 2023/04/17 08:00 | Kai Lemstra v Philipp Pavlenko | 7-6,4-6,10-8 |
| ITF M15 - Telde | 2023/04/11 09:00 | Kai Lemstra v Diego A B Sanchez | 0-6,3-6 |
| ITF M15 - Telde | 2023/04/10 07:00 | Kai Lemstra v Alen Moritz Hodzic | 6-1,2-6,10-7 |
| ITF M15 - Warmbad-Villach | 2023/05/21 10:00 | Yannick Penkner v Igor Dudun | 4-6,4-6 |
| ITF M15 - Krsko | 2023/05/15 08:00 | Igor Dudun v Lun Obrul | 3-6,3-6 |
| ITF M25 - Tbilisi | 2023/04/30 11:15 | Raz Katz v Igor Dudun | 2-6,6-0,10-4 |
| ITF M25 - Tbilisi | 2023/04/24 08:00 | Eskander Guryev v Igor Dudun | 3-6,6-3,16-14 |
| ITF M25 - Trento | 2023/03/28 07:00 | Biagio Gramaticopolo v Igor Dudun | 6-3,6-3 |
| ITF M25 - Trento | 2023/03/27 11:15 | Erwin Troebinger v Igor Dudun | 1-6,1-6 |
| ITF M25 - Opatija | 2023/03/19 10:30 | Igor Dudun v Federico Marchetti | 6-7,3-6 |
| ITF M15 - Rovinj | 2023/03/12 09:00 | Paul Woerner v Igor Dudun | 6-3,6-3 |