Stadium: Clay 3 Round: 25 Ground: Clay
| ITF Turkey F30 | 2018/10/02 07:00 | Paroulek, Tadeas v Katic, Dejan | 7-6,6-4 |
| ITF Turkey F29 | 2018/09/27 07:30 | Walder, Jordi v Katic, Dejan | 6-3,6-1 |
| ITF Turkey F29 | 2018/09/25 07:30 | Mert Naci Turker v Katic, Dejan | 3-6,4-6 |
| ITF Turkey F28 | 2018/09/18 07:30 | Brechemier, Thomas v Katic, Dejan | 2-6,6-7 |
| Serbia F5, Singles | 2018/09/09 10:00 | Katic, Dejan v Butsch, Justin | 6-4,7-5 |
| Serbia F5, Singles | 2018/09/08 11:00 | Denis Klok v Katic, Dejan | 3-6,6-3,1-6 |
| Serbia F5, Singles | 2018/09/07 09:15 | Katic, Dejan v Daljev, Pavle | 7-6,6-3 |
| Serbia F5, Singles | 2018/09/06 10:50 | Katic, Dejan v Gatev, Maximilian | 6-3,6-1 |
| ITF Russia F8 | 2018/08/29 09:25 | Boborykin, Alexander v Ratniuk, Maxim | 6-1,7-6 |
| ITF Russia F8 | 2018/08/28 11:35 | Ratniuk, Maxim v Dzhanashia, Shalva | 2-6,7-6,6-2 |
| ITF Russia F7 | 2018/08/23 07:00 | Zhurbin, Alexander v Ratniuk, Maxim | 6-2,6-4 |
| ITF Russia F7 | 2018/08/22 07:30 | Ratniuk, Maxim v Ivanov, Vladimir | 7-6,7-5 |
| ITF Russia F7 | 2018/08/21 09:15 | Matsukevitch, Denis v Ratniuk, Maxim | 7-5,1-6,2-6 |
| ITF Russia F6 | 2018/08/16 08:55 | Muzaev, Richard v Ratniuk, Maxim | 7-5,6-7,7-6 |
| ITF Russia F6 | 2018/08/15 07:00 | Khotkov, Oleg v Ratniuk, Maxim | 4-6,3-6 |
| ITF Russia F6 | 2018/08/14 09:45 | Ratniuk, Maxim v Kalovelonis, Markos | 6-4,7-5 |