Stadium: Center Court Round: 25 Ground: Clay
| ITF Sweden F3 | 2018/05/21 08:00 | Marc Dijkhuizen v Frederik Press | 1-6,6-3,6-7 |
| ITF Sweden F3 Qual | 2018/05/20 09:00 | Marc Dijkhuizen v Rasmus Johnsson | 6-3,6-1 |
| ITF Sweden F2 | 2018/05/16 10:25 | Marc Dijkhuizen v Gabriel Petit | 3-6,6-4,3-6 |
| ITF Sweden F2 | 2018/05/15 08:30 | Marc Dijkhuizen v Antoine Walch | 6-1,6-2 |
| ITF Turkey F17 | 2018/05/01 13:30 | Robin Thour v Marc Dijkhuizen | 6-4,7-5 |
| ITF Turkey F16 | 2018/04/21 09:30 | Marc Dijkhuizen v Lazar Vojinovic | 6-7,1-6 |
| ITF Portugal F4 | 2018/03/13 15:20 | Tsung-Hua Yang v Marc Dijkhuizen | 6-4,6-2 |
| ITF Portugal F4 | 2018/03/12 10:00 | Peter Bothwell v Marc Dijkhuizen | 6-1,6-2 |
| ITF Czech Republic F1 | 2018/05/16 08:00 | Niels Lootsma v Michal Konecny | 7-5,3-6,4-6 |
| ITF Egypt F17 | 2018/05/10 09:05 | Niels Lootsma v Ronald Slobodchikov | 6-2,6-7,2-6 |
| ITF Egypt F17 | 2018/05/08 07:30 | Niels Lootsma v Daniil Zarichanskiy | 6-4,6-1 |
| ITF Egypt F16 | 2018/05/03 08:00 | Niels Lootsma v Duje Kekez | 1-6,7-6,5-7 |
| ITF Egypt F16 | 2018/05/02 15:00 | Christian Hirschmueller v Niels Lootsma | 1-6,6-3,4-6 |
| ITF Portugal F1 | 2018/02/20 11:50 | Ben Patael v Niels Lootsma | 6-0,6-1 |
| ITF Czech Republic F12 | 2017/11/29 12:05 | Niels Lootsma v Matej Vocel | 4-6,4-6 |
| ITF Czech Republic F11 | 2017/11/24 09:00 | Marek Gengel v Niels Lootsma | 6-3,6-1 |