Stadium: Centre Court Round: 46 Ground: Clay
| Challenger Banja Luka | 2018/09/08 11:50 | Marko Vujic v Andrej Duric | 6-0,6-1 |
| ITF Serbia F2 | 2018/08/12 10:30 | Marko Vujic v Ivan Randjelovic | 6-0,6-2 |
| ITF Serbia F2 | 2018/08/11 07:00 | Marko Vujic v Stefan Skadarka | 6-3,6-4 |
| ITF Austria F3 | 2018/07/16 15:35 | Petr Michnev v Marko Vujic | 6-1,6-1 |
| ITF Austria F2 | 2018/07/07 07:15 | Vital Flurin Leuch v Marko Vujic | 6-4,7-5 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 11:00 | Marko Vujic v Nik Razborsek | 1-6,0-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/29 10:05 | Scott Puodziunas v Marko Vujic | 6-1,2-6,1-6 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/28 11:30 | Ignacio Carou v Marko Vujic | 6-3,3-6,2-6 |
| ITF Switzerland F4 | 2018/08/29 11:30 | Christian Lindell v Alexander Lazov | 6-3,7-6 |
| ITF Switzerland F4 | 2018/08/28 13:40 | Eduardo Dischinger v Alexander Lazov | 6-3,3-6,4-6 |
| ITF Netherlands F5 | 2018/08/25 09:30 | Nik Razborsek v Alexander Lazov | 3-6,6-1,6-4 |
| ITF Netherlands F5 | 2018/08/24 15:05 | Philipp Schroll v Alexander Lazov | 3-6,4-6 |
| ITF Netherlands F5 | 2018/08/23 08:00 | Rayan Ghedjemis v Alexander Lazov | 6-2,2-6,0-6 |
| ITF Netherlands F5 | 2018/08/21 08:00 | Kazuki Nishiwaki v Alexander Lazov | 6-0,2-6,1-6 |
| ITF Netherlands F4 | 2018/08/18 11:00 | Mariano Kestelboim v Alexander Lazov | 3-6,2-6 |
| ITF Netherlands F4 | 2018/08/17 09:00 | Felipe Mantilla v Alexander Lazov | 1-6,6-4,2-6 |