Stadium: Court 2 Round: 45
| Challenger Scheveningen Qual | 2018/07/14 14:05 | Miliaan Niesten v Antoine Bellier | 6-1,3-6,3-6 |
| ITF Germany F4 | 2018/06/20 10:50 | Nerman Fatic v Miliaan Niesten | 6-0,6-7,7-5 |
| ATP Hertogenbosch Qual | 2018/06/10 10:50 | Miliaan Niesten v Alex Bolt | 3-6,3-6 |
| ATP Hertogenbosch Qual | 2018/06/09 10:15 | Donald Young v Miliaan Niesten | 4-6,2-6 |
| Challenger Loughborough Qual | 2018/05/19 14:40 | Andrea Vavassori v Miliaan Niesten | 3-6,6-1,6-0 |
| Challenger Heilbronn Qual | 2018/05/14 11:00 | Miliaan Niesten v Igor Sijsling | 3-6,2-6 |
| Challenger Heilbronn Qual | 2018/05/13 09:00 | Hernan Casanova v Miliaan Niesten | 1-6,5-7 |
| Challenger Heilbronn Qual | 2018/05/12 09:00 | Miliaan Niesten v Mathieu Meyer | 6-1,6-3 |
| Challenger Granby Qual | 2018/07/21 16:25 | Taha Baadi v Jumpei Yamasaki | 7-6,6-4 |
| Challenger Gatineau Qual | 2018/07/14 21:55 | Jacob Grills v Jumpei Yamasaki | 6-3,6-1 |
| Challenger Winnipeg Qual | 2018/07/08 18:05 | Sem Verbeek v Jumpei Yamasaki | 7-6,7-6 |
| ITF Hong Kong F1 | 2018/06/29 02:00 | Jumpei Yamasaki v Yuki Mochizuki | 4-6,4-6 |
| ITF Hong Kong F1 | 2018/06/28 02:00 | Chukang Wang v Jumpei Yamasaki | 0-6,2-6 |
| ITF Hong Kong F1 | 2018/06/27 03:45 | Anthony Jackie Tang v Jumpei Yamasaki | 7-5,3-6,1-6 |
| ITF Hong Kong F1 | 2018/06/26 03:15 | Wei-De Lin v Jumpei Yamasaki | 3-6,3-6 |
| ITF Korea F3 | 2018/06/22 04:55 | Soonwoo Kwon v Jumpei Yamasaki | 6-3,6-1 |