Stadium: Hard Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/17 08:05 | Alastair Gray v Kai Lemstra | 6-1,7-5 |
| ITF M15 Heraklion | 2023/11/21 11:55 | Alastair Gray v Joel Schwaerzler | 6-3,6-3 |
| ITF M25 Trnava | 2023/11/09 08:55 | Alastair Gray v Karl Friberg | 6-1,5-7,3-6 |
| ITF M25 Trnava | 2023/11/08 08:55 | Martyn Pawelski v Alastair Gray | 2-6,4-6 |
| ITF M25 Sunderland | 2023/11/02 12:35 | Tibo Colson v Alastair Gray | 6-3,7-6 |
| ITF M25 Sunderland | 2023/10/31 10:00 | Alastair Gray v Paul Jubb | 6-2,7-5 |
| ITF M25 Tbilisi | 2023/04/26 13:00 | Evgeny Philippov v Alastair Gray | 2-6,6-4,6-4 |
| ITF M25 Sharm El Sheikh | 2023/04/19 08:30 | Alastair Gray v Saba Purtseladze | 4-6,6-7 |
| ITF M25 Sharm El Sheikh | 2023/04/13 08:30 | Alastair Gray v Saba Purtseladze | 3-6,6-4,3-6 |
| ITF M15 Heraklion | 2023/11/22 12:25 | Alexandros Skorilas v Kai Lemstra | 6-7,1-6 |
| ITF M15 Heraklion | 2023/11/16 08:00 | Kai Lemstra v Jakub Nicod | 6-7,6-1,3-6 |
| ITF M15 Heraklion | 2023/11/14 08:30 | Kai Lemstra v Nikolay Nedelchev | 3-6,6-4,6-1 |
| ITF M15 Selva Gardena | 2023/11/01 12:05 | Kai Lemstra v Hynek Barton | 4-6,4-6 |
| ITF M15 Selva Gardena | 2023/10/30 13:20 | Massimo Giunta v Kai Lemstra | 2-6,4-6 |
| ITF M15 Bad Waltersdorf | 2023/10/05 07:30 | Kai Lemstra v Vlad Andrei Dancu | 1-6,1-6 |
| ITF M15 Bad Waltersdorf | 2023/10/03 07:20 | Jakub Filip v Kai Lemstra | 0-6,0-6 |
| ITF M15 Satu Mare | 2023/09/14 10:35 | Stefan Palosi v Kai Lemstra | 6-4,7-6 |