Stadium: Court 1 Round: 25 Ground: Clay
| ITF Slovakia F1 | 2018/07/23 09:00 | Vajda, Peter v Jirousek, Tomas | 0-6,3-6 |
| ITF Slovakia F1 | 2018/07/22 08:00 | Vajda, Peter v Pavlovic, Marko | 6-3,6-1 |
| ITF Slovakia F1 | 2018/07/21 11:00 | Hodor, Samuel v Vajda, Peter | 5-7,3-6 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 14:30 | Muzaev, Richard v Vajda, Peter | 6-7,6-3,6-1 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 09:30 | Vajda, Peter v Bachmaier, Philip | 6-2,6-4 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Vajda, Peter v Mrazek, David | 3-6,3-6 |
| Challenger Poprad Tatry | 2018/06/18 13:30 | Vajda, Peter v Mohamed Safwat | 1-6,1-6 |
| Egypt F15, Singles Qualifying | 2018/04/25 08:00 | Vajda, Peter v Trapeznikov, Zakhar | 6-3,3-6,0-6 |
| ITF Slovakia F2 | 2018/07/31 07:00 | Semjan, Marek v Stepanek, Antonin | 6-3,6-3 |
| ITF Slovakia F1 | 2018/07/26 11:05 | Paroulek, Tadeas v Semjan, Marek | 7-6,2-6,6-3 |
| ITF Slovakia F1 | 2018/07/25 09:00 | Semjan, Marek v Borroni, Andrea | 6-1,6-1 |
| ITF Austria F3 | 2018/07/16 12:00 | Semjan, Marek v Michael Vrbensky | 6-3,3-6,4-6 |
| ITF Austria F3 | 2018/07/15 09:30 | Semjan, Marek v Cancel, Thibault | 2-6,7-5,6-3 |
| ITF Czech Republic F6 | 2018/07/11 12:00 | Semjan, Marek v Mertl, Jan | 6-3,5-7,4-6 |
| ITF Czech Republic F6 | 2018/07/09 09:05 | Guido Ivan Justo v Semjan, Marek | 5-7,6-2,4-6 |
| Czech Republic F6, Singles Qualifying | 2018/07/08 08:00 | Semjan, Marek v Remy Bertola | 7-5,6-4 |