Stadium: Court 15 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/23 10:30 | Guy Den Heijer v Vojtech Mares | 5-7,7-6,10-6 |
| ITF M15 Heraklion | 2023/10/19 08:45 | Guy Den Heijer v Gabriel Decamps | 2-6,4-6 |
| ITF M25 Santa Margherita | 2023/09/25 08:00 | Niels Visker v Guy Den Heijer | 5-7,6-4,11-9 |
| ITF M25 Santa Margherita | 2023/09/24 08:00 | Niccolo Ciavarella v Guy Den Heijer | 6-2,3-6,7-10 |
| ITF M25 Santa Margherita | 2023/09/18 08:30 | Guy Den Heijer v Toby Martin | 5-7,6-3,7-10 |
| 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 M15 Heraklion | 2023/10/23 07:30 | Ki Lung NG v Joshua Charlton | 0-6,0-6 |
| ITF M25 Darwin | 2023/09/21 05:30 | Joshua Charlton v Blake Mott | 1-6,2-6 |
| ITF M25 Darwin | 2023/09/20 08:00 | Jesse Delaney v Joshua Charlton | 6-4,3-6,6-7 |
| ITF M25 Darwin | 2023/09/19 05:30 | Joshua Charlton v Lleyton Richards | 6-1,6-1 |
| ITF M25 Darwin | 2023/09/18 05:30 | Joshua Charlton v Timmy Karpinski | 4-6,7-6,10-8 |
| ITF M25 Darwin | 2023/09/13 08:20 | Moerani Bouzige v Joshua Charlton | 6-2,6-2 |
| UTR Pro California | 2023/07/22 20:23 | Joshua Charlton v Constantinos Djakouris | 6-4,3-6,2-6 |
| UTR Pro California | 2023/07/22 01:30 | Joshua Charlton v Brett Brinkman | 7-6,3-6,6-0 |