Round: 44 Ground: Clay
| 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 Qatar F1 | 2018/02/27 12:00 | Marek Semjan v Denis Yevseyev | 3-6,6-3,1-6 |
| ITF Qatar F4 | 2017/12/06 12:00 | Marek Semjan v Antoine Escoffier | 2-6,3-6 |
| ITF Qatar F4 | 2017/12/05 12:00 | Hamad Almohannadi v Marek Semjan | 1-6,0-6 |
| ITF Qatar F4 Qual | 2017/12/04 12:00 | Fran Zvonimir Zgombic v Marek Semjan | 2-6,6-1,3-6 |
| ITF Kazakhstan F3 Qual | 2018/04/08 05:00 | Maksim Maslov v Igor Timoshenko | 0-6,1-6 |
| ITF Russia F2 | 2018/03/03 09:00 | Petr Arkhipov v Igor Timoshenko | 6-3,7-5 |