Stadium: Court 3 Round: 25 Ground: Clay
| ITF Hungary F6 | 2018/08/21 12:50 | Danylo Kalenichenko v Martin Zeljenka | 6-1,6-3 |
| ITF Hungary F6 | 2018/08/20 09:00 | Bartosz Wojnar v Martin Zeljenka | 4-6,6-7 |
| ITF Slovakia F3 | 2018/08/07 08:00 | Martin Zeljenka v Jack Draper | 4-6,2-6 |
| ITF Slovakia F3 | 2018/08/06 08:00 | Isa Mammetgulyyev v Martin Zeljenka | 6-3,1-6,1-6 |
| ITF Slovakia F2 | 2018/07/29 09:00 | Martin Zeljenka v Adam Blecha | 3-6,6-4,3-6 |
| ITF Slovakia F1 | 2018/07/23 09:00 | Isa Mammetgulyyev v Martin Zeljenka | 6-4,6-1 |
| ITF Slovakia F1 | 2018/07/22 08:00 | Roman Garkavenko v Martin Zeljenka | 2-6,1-6 |
| ITF Austria F3 | 2018/07/15 08:00 | Ivan Davydov v Martin Zeljenka | 6-0,6-4 |
| ITF Hungary F7 | 2018/08/27 08:30 | Wilson Leite v Dominik Kisantal | 6-1,6-2 |
| ITF Hungary F7 | 2018/08/26 13:00 | Wilson Leite v Matthew Kandath | 7-6,6-4 |
| ITF Hungary F6 | 2018/08/23 13:30 | Wilson Leite v Pavel Nejedly | 0-6,6-7 |
| ITF Hungary F6 | 2018/08/22 08:30 | Wilson Leite v Marcell Bartakovics | 6-2,6-1 |
| ITF Romania F9 | 2018/08/17 07:00 | Wilson Leite v Federico Coria | 3-6,5-7 |
| ITF Romania F9 | 2018/08/16 12:00 | Maxime Tchoutakian v Wilson Leite | 4-6,2-6 |
| ITF Romania F9 | 2018/08/14 10:35 | Wilson Leite v Petru-Alexandru Luncanu | 6-0,6-1 |
| ITF Italy F22 | 2018/08/05 09:45 | Wilson Leite v Gabriele Maria Noce | 4-6,2-6 |