Stadium: Centre Court Round: 27
| ITF Portugal F18 | 2018/09/27 11:10 | Barbosa, Romain v Marek Gengel | 4-6,4-6 |
| ITF Portugal F18 | 2018/09/26 14:05 | Marek Gengel v Carr, Simon | 6-1,6-4 |
| ITF Belarus F3 | 2018/08/25 07:00 | Marek Gengel v Vilardo, Francesco | 1-6,3-6 |
| ITF Belarus F3 | 2018/08/24 07:00 | Smilansky, Igor v Marek Gengel | 4-6,4-6 |
| ITF Belarus F3 | 2018/08/23 07:00 | Paris, Joshua v Marek Gengel | 4-6,6-1,2-6 |
| ITF Belarus F3 | 2018/08/22 07:00 | Ben Jones v Marek Gengel | 6-3,4-6,2-6 |
| ITF Belarus F3 | 2018/08/21 07:00 | Grigoriy Lomakin v Marek Gengel | 2-6,1-6 |
| ITF Belarus F2 | 2018/08/16 07:00 | Marek Gengel v Betov, Sergey | 5-7,3-6 |
| ITF Portugal F18 | 2018/09/27 09:00 | Pedro Araujo v Mertens, Yannick | 2-6,3-6 |
| ITF Portugal F18 | 2018/09/26 10:20 | Dischinger, Eduardo v Mertens, Yannick | 0-6,6-7 |
| ITF France F18 | 2018/09/23 13:00 | Cornut-Chauvinc, Antoine v Mertens, Yannick | 6-7,2-6 |
| ITF France F18 | 2018/09/22 13:50 | Antoine Escoffier v Mertens, Yannick | 6-7,6-3,6-7 |
| ITF France F18 | 2018/09/21 10:30 | Avidzba, Alen v Mertens, Yannick | 1-6,0-6 |
| ITF France F18 | 2018/09/19 11:35 | Sora Fukuda v Mertens, Yannick | 3-6,4-6 |
| ITF France F18 | 2018/09/18 09:35 | Bourcet, Tony v Mertens, Yannick | 4-6,2-6 |
| ITF France F16 | 2018/09/07 09:20 | Mertens, Yannick v Albano Olivetti | 1-6,5-7 |