Stadium: Court 6 Round: 26 Ground: Clay
| ITF Netherlands F1 | 2018/06/27 10:40 | Gabriel Decamps v Gerritsen, Stephan | 3-6,6-0,4-6 |
| ITF Belgium F1 | 2018/06/20 08:00 | Kenneth Raisma v Gerritsen, Stephan | 7-6,6-4 |
| Turkey F20, Singles Qualifying | 2018/05/23 09:50 | Cengiz Aksu v Gerritsen, Stephan | 6-4,6-2 |
| ITF Nigeria F3 | 2018/05/01 09:00 | Singh, Dalwinder v Gerritsen, Stephan | 6-2,7-6 |
| ITF Nigeria F3 Qual | 2018/04/29 10:30 | Gerritsen, Stephan v Jacobs, Tuki | 6-7,7-6,6-1 |
| Nigeria F2, Singles | 2018/04/27 10:00 | Neuchrist, Maximilian v Gerritsen, Stephan | 6-2,6-1 |
| Nigeria F2, Singles | 2018/04/26 10:30 | Gerritsen, Stephan v Eriksson, Markus | 6-7,6-3,6-4 |
| Nigeria F2, Singles | 2018/04/24 09:00 | Matos, Diego v Gerritsen, Stephan | 6-3,3-6,4-6 |
| ITF Netherlands F1 | 2018/06/27 10:45 | Ryan Nijboer v Barretto, Paul | 6-4,7-6 |
| ITF Belgium F1 | 2018/06/21 11:05 | Ryan Nijboer v Geens, Clement | 2-6,1-6 |
| ITF Belgium F1 | 2018/06/19 08:00 | Ryan Nijboer v Gauthier Onclin | 6-2,7-5 |
| ITF Spain F10 Qual | 2018/04/23 09:00 | Ryan Nijboer v Tashi, Vullnet | 4-6,2-6 |
| ITF Spain F10 Qual | 2018/04/22 14:00 | Ryan Nijboer v Cannell, Joel | 2-6,6-4,6-4 |
| ITF Spain F10 Qual | 2018/04/21 11:00 | Ryan Nijboer v Stepanov Zyabtchenko, Felipe | 6-4,6-4 |
| ITF Spain F9 Qual | 2018/04/15 10:30 | Ryan Nijboer v Nikolas Sanchez Izquierdo | 3-6,3-6 |
| ITF Egypt F11 | 2018/03/28 10:15 | Ryan Nijboer v Manafov, Vladyslav | 6-7,7-6,6-7 |