Stadium: Court 7 Round: 45 Ground: Hardcourt outdoor
| ITF Germany F14 | 2018/10/04 10:00 | Christoph Negritu v Valentin Guenther | 3-6,7-5,7-5 |
| ITF Germany F14 | 2018/10/03 11:35 | Jakob Aichhorn v Valentin Guenther | 3-6,2-6 |
| ITF Belgium F10 | 2018/08/28 08:00 | Valentin Guenther v Mariano Kestelboim | 3-6,1-6 |
| ITF Germany F13 | 2018/08/21 08:00 | Kai Wehnelt v Valentin Guenther | 7-5,6-1 |
| ITF Netherlands F3 | 2018/07/11 12:50 | Arklon H D Pino v Valentin Guenther | 3-6,6-3,7-5 |
| ITF Netherlands F3 | 2018/07/10 12:00 | Yanais Laurent v Valentin Guenther | 3-6,3-6 |
| ITF Netherlands F3 | 2018/07/07 09:30 | Valentin Guenther v Noe Khlif | 4-6,6-2,6-4 |
| ITF Netherlands F3 | 2018/07/07 08:00 | Valentin Guenther v Roland Stuurman | 3-6,6-2,6-2 |
| ITF Hungary F7 | 2018/08/28 08:30 | Oscar Jose Gutierrez v Domen Gostincar | 6-3,6-2 |
| ITF Hungary F7 | 2018/08/27 08:30 | Philip Aplienz v Domen Gostincar | 6-3,3-6,1-6 |
| ITF Hungary F7 | 2018/08/25 08:00 | Domen Gostincar v Mario Stino | 6-1,4-6,6-3 |
| ITF Czech Republic F6 Qual | 2018/07/07 07:30 | Domen Gostincar v Remy Bertola | 1-6,6-3,4-6 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Martin Zeljenka v Domen Gostincar | 6-4,6-3 |
| ITF Hungary F1 Qual | 2018/05/05 10:00 | Domen Gostincar v Andre Biro | 2-6,2-6 |
| ITF Dominican Republic F3 | 2017/12/09 15:30 | Domen Gostincar v Rowland Phillips | 1-6,7-6,3-6 |
| ITF Dominican Republic F2 | 2017/12/03 14:00 | Danail Banov v Domen Gostincar | 2-6,6-2,6-3 |