Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF Czech Republic F10 | 2018/11/14 14:40 | Stanek, Robin v Guenther, Valentin | 7-5,7-6 |
| ITF Czech Republic F9 | 2018/11/08 15:10 | Guenther, Valentin v Jonas Forejtek | 4-6,6-7 |
| ITF Czech Republic F9 | 2018/11/06 09:00 | Vondrak, Martin v Guenther, Valentin | 3-6,4-6 |
| ITF Germany F16 | 2018/10/23 13:10 | Guenther, Valentin v Tyurnev, Evgeny | 2-6,2-6 |
| ITF Germany F14 | 2018/10/04 10:00 | Christoph Negritu v Guenther, Valentin | 3-6,7-5,7-5 |
| ITF Germany F14 | 2018/10/03 11:35 | Aichhorn, Jakob v Guenther, Valentin | 3-6,2-6 |
| ITF Belgium F10 | 2018/08/28 08:00 | Guenther, Valentin v Mariano Kestelboim | 3-6,1-6 |
| ITF Germany F13 | 2018/08/21 08:00 | Kai Wehnelt v Guenther, Valentin | 7-5,6-1 |
| ITF France F21 | 2018/10/06 13:20 | Freire Da Silva, Diamant v Emilien Voisin | 6-2,6-3 |
| France F20, Singles | 2018/10/02 11:30 | Jacq, Gregoire v Emilien Voisin | 6-1,6-1 |
| ITF Netherlands F3 | 2018/07/07 11:30 | Bodin, Joris v Emilien Voisin | 6-3,6-3 |
| ITF France F12 | 2018/07/02 11:25 | Emilien Voisin v Joffrey De Schepper | 1-6,4-6 |
| ITF France F9 | 2018/05/02 15:00 | Emilien Voisin v Maxime Chazal | 7-6,3-6,0-6 |
| ITF France F9 | 2018/04/30 14:25 | Emilien Voisin v Chaix, Louis | 6-4,6-2 |
| ITF France F9 Qual | 2018/04/29 08:00 | Perchicot, Mathieu v Emilien Voisin | 2-6,6-3,2-6 |
| ITF France F9 Qual | 2018/04/28 09:40 | Conrardy, Chris v Emilien Voisin | 2-6,4-6 |