Stadium: Hard 20 Round: 28 Ground: Hardcourt outdoor
| ITF M25 - Heraklion | 2023/12/01 10:50 | Pavlos Tsitsipas v Marek Gengel | 6-3,2-6,2-6 |
| ITF M25 - Heraklion | 2023/11/30 07:30 | Max Benaim v Marek Gengel | 1-6,2-6 |
| ITF M25 - Heraklion | 2023/11/29 08:50 | Evangelos Kypriotis v Marek Gengel | 0-6,1-6 |
| ITF M25 - Vale Do Lobo | 2023/11/15 10:00 | Pietro Pampanin v Marek Gengel | 6-4,6-3 |
| ITF M25 - Sharm El Sheikh | 2023/11/02 08:00 | Marek Gengel v Harrison Adams | 6-7,1-6 |
| ITF M25 - Sharm El Sheikh | 2023/11/01 09:45 | Marek Gengel v Akram El Sallaly | 6-4,6-2 |
| ITF M15 - Sharm El Sheikh | 2023/10/20 07:00 | Marek Gengel v Yurii Dzhavakian | 2-6,2-6 |
| ITF M15 - Sharm El Sheikh | 2023/10/19 08:15 | Marek Gengel v Nicolo Consonni | 6-3,6-4 |
| ITF M25 - Heraklion | 2023/12/01 09:10 | Jakub Nicod v Valentin Royer | 2-6,2-6 |
| ITF M25 - Heraklion | 2023/11/30 09:55 | Amit Vales v Valentin Royer | 2-6,1-6 |
| ITF M25 - Heraklion | 2023/11/28 13:10 | Vuk Radjenovic v Valentin Royer | 3-6,0-6 |
| ITF M25 - Sunderland | 2023/11/03 11:15 | Valentin Royer v Alexander Blockx | 6-7,3-6 |
| ITF M25 - Sunderland | 2023/11/02 12:50 | Valentin Royer v Phoenix Weir | 3-6,6-4,6-3 |
| ITF M25 - Sunderland | 2023/11/01 17:00 | Valentin Royer v Marcus Walters | 6-2,6-1 |
| ITF M15 - Heraklion | 2023/10/29 08:00 | Valentin Royer v Matthew William Donald | 6-1,6-1 |
| ITF M15 - Heraklion | 2023/10/28 08:00 | Valentin Royer v Adam Heinonen | 6-3,6-3 |