Round: 25 Ground: Clay
| Challenger Bordeaux Qual | 2018/05/13 10:50 | Mathias Bourgue v Desein, Niels | 6-2,7-6 |
| Challenger Bordeaux Qual | 2018/05/12 11:10 | Eysseric, Jonathan v Desein, Niels | 3-6,6-3,3-6 |
| ITF France F8 | 2018/04/25 09:25 | Tristan Lamasine v Desein, Niels | 7-5,6-4 |
| ITF Portugal F8 | 2018/04/19 13:05 | Monteiro, Joao v Desein, Niels | 6-2,6-7,6-4 |
| ITF Portugal F8 | 2018/04/18 15:00 | Desein, Niels v Dias, Francisco | 6-1,4-6,6-1 |
| ITF Italy F7 | 2018/04/11 13:45 | Desein, Niels v Andrea Collarini | 3-6,6-7 |
| ITF Italy F7 | 2018/04/09 16:20 | Desein, Niels v Ornago, Fabrizio | 6-2,6-1 |
| Challenger Alicante Qual | 2018/03/31 10:10 | Gimeno-Traver, Daniel v Desein, Niels | 3-6,6-1,6-2 |
| ITF Romania F2 | 2018/05/29 06:55 | Filip, Vladimir v Sturdza, Constantin | 6-0,6-1 |
| ITF Romania F3 | 2015/08/25 08:25 | Sturdza, Constantin v Craciun, Teodor-Dacian | 2-6,1-6 |
| ITF Romania F4 | 2014/06/16 08:00 | Sturdza, Constantin v Grigoriu, Patrick | 6-4,4-6,3-6 |