Stadium: Court 3 Round: 44 Ground: Clay
| ITF M25 Esch/Alzette | 2023/07/17 08:40 | Guy Den Heijer v Mats Bredschneijder | 4-6,6-2,10-6 |
| ITF M25 Esch/Alzette | 2023/07/10 09:30 | Brian Bozemoj v Guy Den Heijer | 6-2,4-6,16-14 |
| ITF M25 The Hague | 2023/07/07 11:35 | Eric Vanshelboim v Guy Den Heijer | 6-2,6-2 |
| ITF M25 The Hague | 2023/07/06 09:00 | Fons Van Sambeek v Guy Den Heijer | 4-6,6-1,2-6 |
| ITF M15 Alkmaar | 2023/06/25 10:00 | Guy Den Heijer v Stijn Paardekooper | 4-6,6-4,12-14 |
| ITF M15 Saarlouis | 2023/06/22 11:30 | Lodewijk Weststrate v Guy Den Heijer | 7-6,6-4 |
| ITF M15 Saarlouis | 2023/06/21 13:20 | David Fix v Guy Den Heijer | 6-4,6-7,2-6 |
| ITF M15 Saarlouis | 2023/06/19 09:30 | Max Wiskandt v Guy Den Heijer | 4-6,2-6 |
| ITF M25 Esch/Alzette | 2023/07/17 09:20 | Aaron Gil Garcia v William Jucha | 4-6,3-6 |
| ITF M25 Carnac | 2023/05/30 16:35 | Mathias Bourgue v William Jucha | 4-6,6-1,7-6 |
| ITF M25 Carnac | 2023/05/29 10:20 | Gregoire Gervail v William Jucha | 1-6,3-6 |
| ITF M25 Toulouse | 2023/03/21 09:00 | Federico Bertuccioli v William Jucha | 6-4,6-1 |
| ITF M25 Toulouse | 2023/03/20 09:00 | William Jucha v Pierre Antoine Tailleu | 6-4,1-6,10-4 |
| ITF M15 Poitiers | 2023/03/14 13:35 | Tristan Lamasine v William Jucha | 6-4,6-1 |
| ITF M15 Poitiers | 2023/03/13 15:45 | Joel Meda v William Jucha | 3-6,2-6 |
| ITF M15 Poitiers | 2023/03/12 18:50 | William Jucha v Liova Ajavon | 7-5,7-5 |