Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Dauhá | 2023/10/09 17:15 | Marek Gengel v Aleksandre Bakshi | 6-4,6-1 |
| ATP Šanghaj | 2023/10/02 07:30 | Rinky Hijikata v Marek Gengel | 6-3,6-2 |
| ITF M25 Sharm El Sheikh | 2023/09/20 08:30 | Marek Gengel v Gianluca Cadenasso | 6-7,0-6 |
| Challenger Istanbul | 2023/09/04 13:35 | Marek Gengel v Ergi Kirkin | 1-6,2-6 |
| Challenger Praha | 2023/08/21 12:15 | Marek Gengel v Maxime Chazal | 2-6,2-6 |
| ATP Eastbourne | 2023/06/24 14:45 | Marc-Andrea Huesler v Marek Gengel | 6-2,6-2 |
| Challenger Little Rock | 2023/05/30 15:00 | Marek Gengel v Nicolas Moreno De Alboran | 6-2,3-6,4-6 |
| ATP Ženeva | 2023/05/20 10:15 | Nino Serdarusic v Marek Gengel | 6-1,6-4 |
| ITF M15 Dauhá | 2023/10/09 16:45 | Paul Woerner v Rashed Nawaf | 6-3,6-4 |
| ITF M15 Dauhá | 2023/10/05 12:30 | Paul Woerner v Quentin Folliot | 3-6,2-6 |
| ITF M15 Vienna | 2023/08/29 08:00 | Luka Mikrut v Paul Woerner | 6-2,6-0 |
| ITF M15 Eupen | 2023/08/09 15:00 | Alec Deckers v Paul Woerner | 7-5,6-4 |
| ITF M15 Hyvinkää | 2023/08/03 12:35 | Dominik Boehler v Paul Woerner | 6-4,6-4 |
| ITF M15 Hyvinkää | 2023/08/02 16:30 | Sami Huurinainen v Paul Woerner | 1-6,3-6 |
| ITF M15 Vejle | 2023/07/27 13:20 | August Holmgren v Paul Woerner | 6-3,7-5 |
| ITF M25 Esch/Alzette | 2023/07/18 10:10 | Paul Woerner v David Pichler | 2-6,4-6 |