Stadium: Court 2 Round: 25 Ground: Clay
| ITF Serbia F1 Qual | 2018/08/06 09:35 | Antun Vidak v Marko Novak | 6-3,6-0 |
| ITF Serbia F1 Qual | 2018/08/05 10:30 | Abdulhamid Mubarak v Antun Vidak | 1-6,5-7 |
| ITF Serbia F1 Qual | 2018/08/04 07:00 | Antun Vidak v Milos Vukovic | 4-6,6-4,6-4 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/27 08:00 | Alen Rogic-Hadzalic v Antun Vidak | 7-6,7-5 |
| ITF Bosnia and Herzegovina F2 Qual | 2018/05/19 12:00 | Antun Vidak v Alexandros Skorilas | 3-6,4-6 |
| ITF Croatia F3 | 2018/03/21 10:10 | Antun Vidak v Karlo Kranic | 3-6,3-6 |
| ITF Croatia F3 | 2018/03/20 08:30 | Antun Vidak v Karlo Cubelic | 6-2,6-4 |
| ITF Croatia F2 | 2018/03/14 12:55 | Antun Vidak v Matej Sabanov | 6-4,6-7,4-6 |
| ITF Czech Republic F4 | 2018/06/28 13:50 | Tadeas Paroulek v Marko Miladinovic | 3-6,6-2,6-1 |
| ITF Czech Republic F4 | 2018/06/27 08:00 | Marko Miladinovic v Rafael Matos | 6-3,6-4 |
| ITF Czech Republic F4 | 2018/06/25 10:00 | David Poljak v Marko Miladinovic | 6-4,1-6,2-6 |
| ITF Hungary F5 | 2018/06/18 12:30 | Marko Miladinovic v Fred Simonsson | 0-6,2-6 |
| ATP Geneva Qual | 2018/05/20 09:00 | Marko Miladinovic v Bernabe Zapata Miralles | 4-6,1-6 |
| ATP Geneva Qual | 2018/05/19 08:00 | Matteo Donati v Marko Miladinovic | 2-6,4-6 |
| ITF Turkey F17 | 2018/05/03 09:00 | Marko Miladinovic v Mate Delic | 6-3,6-7,0-6 |
| ITF Turkey F17 | 2018/05/02 09:10 | Mikhail Korovin v Marko Miladinovic | 0-6,2-6 |