Stadion: Court 8 Round: 54 Ground: Clay
| ITF - M15 - Haren | 2023/09/07 17:25 | Guy Den Heijer v Adrian Oetzbach | 6-7,6-7 |
| ITF - M15 - Haren | 2023/09/05 17:30 | Guy Den Heijer v Kjell De Hek | 6-3,6-1 |
| ITF - M25 - Oldenzaal | 2023/08/30 18:10 | Aleksandr Braynin v Guy Den Heijer | 4-6,7-6,7-5 |
| ITF - M25 - Lesa | 2023/08/24 18:45 | Clement Tabur v Guy Den Heijer | 6-1,6-4 |
| ITF - M25 - Lesa | 2023/08/21 13:00 | Guy Den Heijer v Giuseppe La Vela | 4-6,2-6 |
| ITF - M15 - Eindhoven | 2023/07/31 08:00 | Guy Den Heijer v Daniel De Jonge | 6-7,7-5,11-13 |
| ITF - M25 - Esch/Alzette | 2023/07/20 09:30 | Guy Den Heijer v David Pichler | 7-5,3-6,5-7 |
| ITF - M25 - Esch/Alzette | 2023/07/19 12:05 | Guy Den Heijer v Jan Sebesta | 6-7,7-6,6-3 |
| ITF - M25 - Santa Margherita | 2023/09/17 08:30 | Niccolo Dessi v Toby Martin | 1-6,2-6 |
| ITF - M15 - Wien | 2023/08/30 09:35 | Jan Kobierski v Toby Martin | 7-5,6-2 |
| ITF - M25 - Aldershot | 2023/08/14 12:50 | Toby Martin v Damien Salvestre | 2-6,6-7 |
| ITF - M25 - Aldershot | 2023/08/13 10:20 | Toby Martin v Luca Pow | 6-3,6-0 |
| ITF - M25 - Roehampton | 2023/08/07 09:00 | Ewan Moore v Toby Martin | 4-6,6-4,10-7 |
| ITF - M25 - Roehampton | 2023/08/06 09:00 | Nicholas Jovanovski v Toby Martin | 4-6,3-6 |
| ITF - M25 - Roehampton | 2023/07/17 12:30 | Finn Murgett v Toby Martin | 6-3,6-4 |
| ITF - M25 - Roehampton | 2023/07/16 15:55 | Phoenix Weir v Toby Martin | 4-6,6-3,5-10 |