Stadium: Court 4 Round: 25 Ground: Clay
| 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 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 07:30 | Semjan, Marek v Holis, Stepan | 6-1,6-0 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 15:00 | Semjan, Marek v Hansson, Gustav | 4-6,1-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/30 09:00 | Semjan, Marek v Nikolic, Milos | 6-3,6-1 |
| ITF Poland F4 | 2018/05/24 08:00 | Pawel Juszczak v Semjan, Marek | 3-6,6-3,6-1 |
| ITF Germany F7 | 2018/07/11 09:00 | Haim, Matthias v Michael Vrbensky | 7-6,6-4 |
| ITF Austria F1 | 2018/07/03 08:00 | Michael Vrbensky v Luca Giacomini | 3-6,6-7 |
| ITF Czech Republic F4 Qual | 2018/06/24 11:20 | Michael Vrbensky v Butler, Samm | 5-7,3-6 |
| ITF Czech Republic F4 Qual | 2018/06/23 10:00 | Michael Vrbensky v Pechala, Frantisek | 6-4,6-2 |
| Challenger Prostejov Qual | 2018/06/03 10:10 | Michael Vrbensky v Doumbia, Sadio | 3-6,2-6 |
| ITF Czech Republic F3 | 2018/05/30 08:00 | Michael Vrbensky v Marc-Andrea Huesler | 2-6,6-4,4-6 |
| Czech Republic F2, Singles | 2018/05/22 10:35 | Tomas Machac v Michael Vrbensky | 6-4,6-1 |
| ITF Czech Republic F1 | 2018/05/17 09:45 | Torebko, Peter v Michael Vrbensky | 6-3,6-7,6-2 |