Round: 62 Ground: Clay
| ITF Hungary F2 Qual | 2018/05/14 11:00 | Jonathan Morr v Martin Zeljenka | 2-6,7-6,6-4 |
| ITF Hungary F2 Qual | 2018/05/15 13:20 | Nicolae Frunza v Jonathan Morr | 6-2,6-2 |
| ITF Hungary F2 Qual | 2018/05/14 11:00 | Jonathan Morr v Martin Zeljenka | 2-6,7-6,6-4 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Jonathan Morr v Artur Kulibaba | 6-2,6-1 |
| ITF Egypt F15 | 2018/04/23 08:00 | Jonathan Morr v Jeff Guerrero | 6-2,0-6,1-6 |
| ITF Egypt F14 | 2018/04/16 08:30 | Jonathan Morr v Daniel Echeverry | 3-6,2-6 |
| ITF Egypt F13 | 2018/04/09 08:30 | Vladyslav Orlov v Jonathan Morr | 6-2,6-4 |
| ITF Egypt F13 | 2018/04/08 10:30 | Vasil Yehorov v Jonathan Morr | 2-6,3-6 |
| ITF Egypt F13 | 2018/04/07 12:00 | Kevin Portmann v Jonathan Morr | 3-6,1-6 |
| ITF Hungary F3 Qual | 2018/05/19 10:00 | Martin Zeljenka v Pietro Pirolt | 6-4,6-0 |
| ITF Hungary F2 Qual | 2018/05/14 11:00 | Jonathan Morr v Martin Zeljenka | 2-6,7-6,6-4 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Martin Zeljenka v Domen Gostincar | 6-4,6-3 |
| ITF Hungary F2 Qual | 2018/05/12 10:30 | Andras Necz v Martin Zeljenka | 3-6,6-4,5-7 |
| ITF Hungary F1 Qual | 2018/05/06 08:00 | Andre Biro v Martin Zeljenka | 6-4,7-6 |
| ITF Hungary F1 Qual | 2018/05/05 10:00 | Mark S Meyer v Martin Zeljenka | 3-6,1-6 |
| ITF Poland F1 | 2018/04/28 07:00 | Martin Zeljenka v Duje Ajdukovic | 1-6,3-6 |
| ITF Croatia F3 | 2018/03/18 13:00 | Martin Zeljenka v Nemanja Subanovic | 5-7,1-6 |