Stadium: Court 15 Round: 26 Ground: Hardcourt outdoor
| ITF M15 - Heraklion | 2023/10/17 09:00 | Stefanos Sakellaridis v Dax Donders | 4-6,1-6 |
| ITF M25 - Santa Margherita | 2023/09/26 08:00 | Dax Donders v Daniel Michalski | 3-6,3-6 |
| ITF M25 - Santa Margherita | 2023/09/25 08:00 | Pietro Marino v Dax Donders | 5-7,6-7 |
| ITF M25 - Santa Margherita | 2023/09/24 08:00 | Giammarco Gandolfi v Dax Donders | 3-6,3-6 |
| ITF M25 - Santa Margherita | 2023/09/20 08:25 | Dax Donders v Giuseppe La Vela | 3-6,4-6 |
| ITF M25 - Santa Margherita | 2023/09/19 10:50 | Gian M Di Natale v Dax Donders | 2-6,7-5,4-6 |
| ITF M25 - Santa Margherita | 2023/09/18 08:30 | Dax Donders v Tim Heger | 6-1,6-1 |
| ITF M15 - Haren | 2023/09/07 13:25 | Thiemo De Bakker v Dax Donders | 7-6,6-2 |
| ITF M15 - Heraklion | 2023/10/18 07:25 | Guy Den Ouden v Matthew William Donald | 6-4,6-2 |
| ITF M15 - Heraklion | 2023/10/17 06:30 | Guy Den Ouden v David Quayle | 6-1,7-5 |
| ITF M15 - Heraklion | 2023/10/16 07:00 | Guy Den Ouden v Hamid Reza Nadaf | 6-3,6-4 |
| ITF M25 - Koksijde | 2023/08/20 13:00 | Guy Den Ouden v Timo Legout | 7-5,6-2 |
| ITF M25 - Koksijde | 2023/08/19 12:00 | Luciano Emanuel Ambrogi v Guy Den Ouden | 3-6,4-6 |
| ITF M25 - Koksijde | 2023/08/18 08:00 | Guy Den Ouden v Buvaysar Gadamauri | 6-3,7-5 |
| ITF M25 - Koksijde | 2023/08/16 15:30 | Guy Den Ouden v Alexander Blockx | 6-2,6-2 |
| ITF M25 - Koksijde | 2023/08/14 14:10 | Guy Den Ouden v Jack Loge | 7-5,6-0 |