Stadium: C Round: 25 Ground: Carpet indoor
| ITF Czech Republic F5 Qual | 2018/07/02 08:00 | Guido Ivan Justo v Mrazek, David | 6-4,7-6 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Vajda, Peter v Mrazek, David | 3-6,3-6 |
| ITF Czech Republic F1 | 2018/05/13 10:00 | Mrazek, David v Adam Blecha | 6-3,5-7,4-6 |
| Spain F4, Singles Qualifying | 2018/02/03 11:00 | Yshai Oliel v Mrazek, David | 6-2,6-2 |
| ITF Spain F3 | 2018/01/28 13:00 | Romero de Avila Senise, Alberto v Mrazek, David | 6-3,6-3 |
| ITF Spain F3 | 2018/01/27 14:00 | Klimov, Daniil v Mrazek, David | 6-4,0-6,0-6 |
| ITF Spain F2 | 2018/01/21 08:30 | Mrazek, David v Mertens, Nico | 2-6,3-6 |
| ITF Spain F2 | 2018/01/20 08:30 | Leuch, Vital Flurin v Mrazek, David | 3-6,3-6 |
| ITF Tunisia F25 | 2018/06/28 12:20 | Portales, Nino v Mikalai Haliak | 6-1,6-3 |
| ITF Tunisia F24 | 2018/06/19 09:00 | Mikalai Haliak v Galarza, Juan Ignacio | 0-6,6-7 |
| ITF Poland F4 | 2018/05/24 10:20 | Gennaro, Dante v Mikalai Haliak | 6-3,1-6,6-3 |
| ITF Poland F4 | 2018/05/22 08:45 | Neubau, Marco v Mikalai Haliak | 3-6,6-4,3-6 |
| ITF Czech Republic F1 | 2018/05/17 08:00 | Peter Heller v Mikalai Haliak | 6-2,6-4 |
| ITF Czech Republic F1 | 2018/05/16 08:00 | Mikalai Haliak v Mertl, Jan | 7-5,6-4 |
| ITF Poland F2 | 2018/05/08 09:50 | Mikalai Haliak v Andrey Chepelev | 4-6,1-6 |
| ITF Poland F2 | 2018/05/07 08:00 | Mikalai Haliak v Wojcik, Yann | 6-2,6-4 |