Stadium: Court 1 Round: 26
| ITF Netherlands F5 | 2018/08/21 08:00 | Kazuki Nishiwaki v Alexander Lazov | 6-0,2-6,1-6 |
| ITF Netherlands F4 | 2018/08/18 11:00 | Kazuki Nishiwaki v Niels Lootsma | 2-6,2-6 |
| ITF Netherlands F4 | 2018/08/17 09:00 | Kazuki Nishiwaki v Jesper De Jong | 4-3 |
| ITF Netherlands F4 | 2018/08/16 10:30 | Yannick Mertens v Kazuki Nishiwaki | 3-6,6-7 |
| ITF Netherlands F4 | 2018/08/15 12:45 | Justin Butsch v Kazuki Nishiwaki | 6-7,0-6 |
| ITF Indonesia F3 | 2018/08/07 04:50 | Kazuki Nishiwaki v Ajeet Rai | 3-6,6-7 |
| ITF Hong Kong F1 | 2018/06/25 03:55 | Kazuki Nishiwaki v Makoto Ochi | 7-6,6-2 |
| ITF Singapore F3 | 2018/05/28 05:00 | Maverick Banes v Kazuki Nishiwaki | 6-7,6-4,7-6 |