| ITF Kazakhstan F4 Qual | 2018/04/15 09:30 | Marek Semjan v Aleksandre Metreveli | 4-6,6-7 |
| ITF Kazakhstan F3 | 2018/04/10 10:00 | Ivan Gakhov v Marek Semjan | 6-2,6-4 |
| ITF Kazakhstan F3 Qual | 2018/04/09 04:00 | Marek Semjan v Ivan Kalinin | 6-4,6-2 |
| ITF Kazakhstan F3 Qual | 2018/04/08 12:25 | Marek Semjan v Igor Timoshenko | 6-3,6-3 |
| ITF Qatar F3 Qual | 2018/03/11 16:05 | Marek Semjan v Palaphoom Kovapitukted | 6-1,6-1 |
| ITF Qatar F2 | 2018/03/06 13:25 | Dominik Kellovsky v Marek Semjan | 4-6,6-3,6-2 |
| ITF Qatar F2 Qual | 2018/03/05 12:30 | Marek Semjan v Alexandru Vasile Manole | 4-6,6-2,6-4 |
| ITF Qatar F2 Qual | 2018/03/04 18:20 | Marek Semjan v Juan David Ramirez | 6-2,6-0 |
| ITF USA F37 | 2017/11/11 16:00 | Michael Paty v Trent Bryde | 1-6,0-6 |