Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF Czech Republic F11 | 2017/11/22 11:35 | Dominik Kellovsky v Marek Semjan | 6-3,7-6 |
| ITF Slovakia F3 | 2016/08/10 08:00 | Dominik Kellovsky v Marek Semjan | 4-6,6-4,7-6 |
| ITF Slovakia F1 | 2016/07/27 12:55 | Dominik Kellovsky v Marek Semjan | 7-5,6-3 |
| ITF Czech Republic F11 | 2017/11/24 09:00 | Dominik Kellovsky v Yanais Laurent | 1-6,1-6 |
| ITF Czech Republic F11 | 2017/11/23 12:40 | Danylo Kalenichenko v Dominik Kellovsky | 6-7,3-6 |
| ITF Czech Republic F11 | 2017/11/22 11:35 | Dominik Kellovsky v Marek Semjan | 6-3,7-6 |
| ITF Greece F7 | 2017/11/01 09:55 | Kevin Griekspoor v Dominik Kellovsky | 6-4,6-2 |
| ITF Greece F6 | 2017/10/26 07:00 | Markos Kalovelonis v Dominik Kellovsky | 7-6,7-6 |
| ITF Greece F6 | 2017/10/24 12:40 | Mousheg Hovhannisyan v Dominik Kellovsky | 3-6,4-6 |
| Challenger Liberec | 2017/07/31 10:30 | Petr Michnev v Dominik Kellovsky | 6-3,6-3 |
| Challenger Prague | 2017/07/27 13:00 | Dominik Kellovsky v Joao Domingues | 2-6,2-6 |
| 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 Qatar F4 Qual | 2017/12/03 15:05 | Martin Nygaard v Marek Semjan | 2-6,2-6 |
| ITF Czech Republic F11 | 2017/11/22 11:35 | Dominik Kellovsky v Marek Semjan | 6-3,7-6 |
| ITF Czech Republic F11 Qual | 2017/11/19 13:00 | Marek Semjan v Nenad Vladusic | 6-3,7-6 |
| ITF Czech Republic F10 | 2017/11/13 11:30 | Tomas Machac v Marek Semjan | 6-4,6-3 |
| Challenger Bratislava Qual | 2017/11/04 10:20 | Franko Skugor v Marek Semjan | 6-2,6-1 |