Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF Netherlands F6 | 2018/08/30 14:25 | Botic Van De Zandschulp v Ryan Nijboer | 6-4,5-7,6-4 |
| ITF Netherlands F6 | 2018/08/29 08:00 | Ryan Nijboer v Kacper Zuk | 6-2,3-6,6-2 |
| ITF Netherlands F5 | 2018/08/21 13:15 | Ryan Nijboer v Roumane, Rayane | 2-6,4-6 |
| ITF Netherlands F4 | 2018/08/16 10:05 | Mantilla, Felipe v Ryan Nijboer | 6-1,6-3 |
| ITF Netherlands F4 | 2018/08/15 08:00 | Ryan Nijboer v Roumane, Rayane | 7-6,5-7,6-4 |
| ITF Belgium F7 | 2018/08/07 10:35 | Ryan Nijboer v Zukas, Matias | 3-6,1-6 |
| ITF Belgium F6 | 2018/07/31 09:00 | Maxime Chazal v Ryan Nijboer | 6-3,7-6 |
| Challenger Scheveningen Qual | 2018/07/14 08:00 | Elliot Benchetrit v Ryan Nijboer | 6-3,6-4 |
| ITF France F17 | 2018/09/12 14:00 | Heyman, Christopher v Gray, Jonathan | 3-6,6-4,6-2 |
| ITF France F16 | 2018/09/04 12:50 | Lucas Poullain v Gray, Jonathan | 6-2,7-5 |
| ITF Belarus F3 | 2018/08/20 10:10 | Gray, Jonathan v Paris, Joshua | 6-4,4-6,4-6 |
| ITF Belarus F2 | 2018/08/15 07:00 | Gray, Jonathan v Giorgio Ricca | 4-6,5-7 |
| ITF Belarus F2 | 2018/08/14 08:45 | Gray, Jonathan v Elia, Alon | 6-3,2-6,7-5 |
| ITF Belarus F1 | 2018/08/11 07:00 | Karimov, Jurabek v Gray, Jonathan | 6-4,6-4 |
| ITF Belarus F1 | 2018/08/10 07:00 | Gray, Jonathan v Betov, Sergey | 2-6,6-3,6-4 |
| ITF Belarus F1 | 2018/08/09 07:00 | Yuksel, Anil v Gray, Jonathan | 5-7,3-6 |