Stadium: Court Central Round: 25 Ground: Clay
| Challenger Recanati Qual | 2018/07/02 10:00 | Tomas Barrios Vera v Yannick Mertens | 7-6,6-3 |
| Challenger Recanati Qual | 2018/07/01 08:00 | Lorenzo Frigerio v Yannick Mertens | 4-6,4-6 |
| Challenger Recanati Qual | 2018/06/30 11:15 | Michel Vernier v Yannick Mertens | 2-6,4-6 |
| ATP Eastbourne Qual | 2018/06/23 14:35 | Yannick Mertens v Roberto Quiroz | 6-3,4-6,3-6 |
| Challenger Fergana | 2018/06/18 10:55 | Farrukh Dustov v Yannick Mertens | 6-4,4-6,6-3 |
| ATP Lyon Qual | 2018/05/19 08:30 | Laslo Djere v Yannick Mertens | 6-4,6-3 |
| Challenger Glasgow | 2018/05/02 11:40 | Yannick Mertens v Hiroki Moriya | 4-6,6-3,6-7 |
| ITF Tunisia F16 | 2018/04/29 09:00 | Yannick Mertens v Altug Celikbilek | 7-6,3-6,4-6 |
| ITF Portugal F11 | 2018/07/05 11:10 | Hugo Voljacques v Wilfredo Gonzalez | 6-2,3-6,4-6 |
| ITF Portugal F11 | 2018/07/04 13:50 | Hugo Voljacques v Hugo Largo | 6-2,6-3 |
| ITF Israel F11 | 2018/06/27 09:45 | Hugo Voljacques v Yannai Barkai | 4-6,4-6 |
| ITF Portugal F9 | 2018/06/21 09:00 | Benjamin Lock v Hugo Voljacques | 6-3,7-5 |
| ITF Portugal F9 | 2018/06/19 09:00 | Hugo Maia v Hugo Voljacques | 6-4,3-6,3-6 |
| ITF Israel F8 | 2018/06/06 07:00 | Edan Leshem v Hugo Voljacques | 7-6,6-3 |
| ITF Israel F8 | 2018/06/05 07:30 | Hugo Voljacques v Or Ram-Harel | 6-4,6-4 |
| ITF Tunisia F19 | 2018/05/18 11:00 | Pablo Vivero Gonzalez v Hugo Voljacques | 6-2,6-4 |