Stadium: Court 4 Round: 54 Ground: Carpet indoor
| ITF Germany F3 | 2018/02/01 13:50 | Voljacques, Hugo v Igor Sijsling | 5-7,0-6 |
| ITF Germany F3 | 2018/01/31 10:00 | Netuschil, Marvin v Voljacques, Hugo | 4-6,6-4,6-7 |
| ITF Germany F3 Qual | 2018/01/29 13:45 | Voljacques, Hugo v Walterscheid-Tukic, Nikolas | 1-6,1-6 |
| ITF France F3 | 2018/01/25 11:00 | Bega, Alessandro v Voljacques, Hugo | 7-6,6-0 |
| ITF France F3 | 2018/01/23 17:20 | Voljacques, Hugo v Patael, Ben | 6-2,6-4 |
| ITF France F2 | 2018/01/19 13:00 | Matteo Martineau v Voljacques, Hugo | 6-2,6-3 |
| ITF France F2 | 2018/01/17 10:30 | Voljacques, Hugo v Juan Pablo Ficovich | 6-7,6-3,6-3 |
| ITF France F2 | 2018/01/16 11:00 | Voljacques, Hugo v Georgii Kravchenko | 6-7,6-1,7-6 |
| ITF Switzerland F1 Qual | 2018/02/04 11:30 | Alt, Joel Javier v Luca Castelnuovo | 4-6,6-3,5-7 |
| ITF Switzerland F1 Qual | 2018/02/03 11:30 | Hartmeier, Patrik v Alt, Joel Javier | 3-6,6-7 |
| ITF Switzerland F4 | 2017/08/21 08:00 | Thomas Setodji v Alt, Joel Javier | 6-4,6-4 |
| ITF Switzerland F4 Qual | 2017/08/19 07:00 | Alt, Joel Javier v Batista, Andre | 6-2,7-5 |
| ITF Switzerland F3 Qual | 2017/08/12 09:00 | Ceppellini, Alessandro v Alt, Joel Javier | 6-3,6-1 |
| Turkey F14, Singles Qualifying | 2016/04/02 06:30 | Alt, Joel Javier v Botezan, George | 2-6,2-6 |