Stadium: Grand Tarabaya Court Round: 25 Ground: Hardcourt outdoor
| Challenger - Praga | 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 - Geneva | 2023/05/20 10:15 | Nino Serdarusic v Marek Gengel | 6-1,6-4 |
| Challenger - Praga - Calificari | 2023/05/07 14:20 | Marek Gengel v Akira Santillan | 2-6,0-6 |
| Challenger - Praga | 2023/04/30 11:25 | Joao Domingues v Marek Gengel | 4-6,6-1,6-2 |
| Challenger - Roma | 2023/04/25 10:05 | Jesper De Jong v Marek Gengel | 6-3,6-2 |
| ATP - Barcelona | 2023/04/15 15:40 | Marek Gengel v Jozef Kovalik | 3-6,2-6 |
| ITF - M25 Tainan | 2023/08/26 01:55 | Ergi Kirkin v Matyas Fuele | 1-6,6-4,3-6 |
| ITF - M25 Tainan | 2023/08/25 02:00 | Ergi Kirkin v Takuya Kumasaka | 6-2,6-2 |
| ITF - M25 Tainan | 2023/08/24 02:00 | Ergi Kirkin v Tomohiro Masabayashi | 6-4,6-3 |
| ITF - M25 Tainan | 2023/08/23 04:20 | Ergi Kirkin v Seita Watanabe | 4-6,7-6,6-3 |
| ITF - M25 Tainan | 2023/08/20 02:00 | Ergi Kirkin v Makoto Ochi | 6-0,6-2 |
| ITF - M25 Tainan | 2023/08/19 01:55 | Ergi Kirkin v Tsung-Hao Huang | 6-3,6-0 |
| ITF - M25 Tainan | 2023/08/18 02:00 | Ergi Kirkin v Bang Shuo Yin | 7-6,7-5 |
| ITF - M25 Tainan | 2023/08/17 02:00 | Ergi Kirkin v Naoki Tajima | 6-3,6-4 |