stadio: Court 1 Round: 25 Ground: Carpet indoor
| ITF Repubblica Ceca F9 | 2018/11/05 12:20 | Mateusz Terczynski v Martin Vondrak | 4-6,3-6 |
| ITF Repubblica Ceca F9 | 2018/11/04 10:00 | Martin Vondrak v Michal Lusovsky | 6-7,6-4,7-6 |
| Challenger Prostejov - Qual. | 2018/06/03 14:15 | Martin Cuevas v Martin Vondrak | 7-5,6-1 |
| Challenger Prostejov - Qual. | 2018/06/03 08:00 | Jakub Novak v Martin Vondrak | 2-6,0-6 |
| ITF Germania F16 | 2018/10/23 13:10 | Valentin Guenther v Evgeny Tyurnev | 2-6,2-6 |
| ITF Germania F14 | 2018/10/04 10:00 | Christoph Negritu v Valentin Guenther | 3-6,7-5,7-5 |
| ITF Germania F14 | 2018/10/03 11:35 | Jakob Aichhorn v Valentin Guenther | 3-6,2-6 |
| ITF Belgio F10 | 2018/08/28 08:00 | Valentin Guenther v Mariano Kestelboim | 3-6,1-6 |
| ITF Germania F13 | 2018/08/21 08:00 | Kai Wehnelt v Valentin Guenther | 7-5,6-1 |
| ITF Olanda F3 | 2018/07/11 12:50 | Arklon H D Pino v Valentin Guenther | 3-6,6-3,7-5 |
| ITF Olanda F3 | 2018/07/10 12:00 | Yanais Laurent v Valentin Guenther | 3-6,3-6 |
| ITF Olanda F3 | 2018/07/07 09:30 | Valentin Guenther v Noe Khlif | 4-6,6-2,6-4 |