Stadium: Clay 6 Round: 26 Ground: Clay
| ITF Ukraine F3 | 2018/05/22 10:45 | Oleg Dolgosheyev v Dejan Katic | 6-4,6-3 |
| ITF Ukraine F2 | 2018/05/15 10:55 | Nazar Achour v Dejan Katic | 6-3,6-4 |
| ITF Ukraine F1 | 2018/05/09 10:15 | Daniil Strelchenko v Dejan Katic | 1-6,6-7 |
| ITF Ukraine F1 | 2018/05/08 13:10 | Vitalii Shcherba v Dejan Katic | 7-5,3-6,6-7 |
| ITF Egypt F13 | 2018/04/10 08:00 | Dejan Katic v Tom Jomby | 1-6,7-6,3-6 |
| ITF Egypt F12 | 2018/04/03 08:00 | Dejan Katic v Issam Haitham Taweel | 6-3,3-6,4-6 |
| ITF Egypt F11 | 2018/03/28 13:00 | Jorge Blanco Guadalupe v Dejan Katic | 6-7,7-6,6-4 |
| ITF Egypt F10 | 2018/03/22 09:50 | Alessandro Bega v Dejan Katic | 2-6,6-4,7-6 |
| Challenger Prostejov Qual | 2018/06/03 14:15 | Jaroslav Pospisil v Gianluca Mager | 6-4,1-6,5-7 |
| Challenger Prostejov Qual | 2018/06/03 08:00 | Jaroslav Pospisil v Dominik Kellovsky | 6-3,6-4 |
| ITF Turkey F14 | 2018/04/15 07:30 | Nino Serdarusic v Jaroslav Pospisil | 6-2,2-6,6-3 |
| ITF Turkey F14 | 2018/04/14 07:30 | Jaroslav Pospisil v Sebastian Baez | 6-3,6-4 |
| ITF Turkey F14 | 2018/04/13 07:30 | Jaroslav Pospisil v Marc Sieber | 6-2,6-4 |
| ITF Turkey F14 | 2018/04/12 09:15 | Roberto Marcora v Jaroslav Pospisil | 1-6,2-6 |
| ITF Turkey F14 | 2018/04/10 07:30 | Jaroslav Pospisil v Muhammet Haylaz | 6-3,6-1 |
| ITF Turkey F13 | 2018/04/05 09:15 | Jaroslav Pospisil v Gilbert S K Junior | 6-4,6-7,5-7 |