Stadium: Court 1 Round: 44 Ground: Hardcourt outdoor
| ITF Japan F2 | 2018/03/16 01:00 | Soichiro Moritani v Shintaro Imai | 2-6,5-7 |
| ITF Japan F2 | 2018/03/14 02:40 | Kento Takeuchi v Soichiro Moritani | 4-6,0-6 |
| ITF Japan F2 | 2018/03/13 00:30 | Yuki Takamura v Soichiro Moritani | 6-4,1-6,3-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Soichiro Moritani v Masaki Osafune | 7-6,6-0 |
| ITF Japan F1 | 2018/03/09 02:00 | Takuto Niki v Soichiro Moritani | 6-1,6-4 |
| ITF Japan F1 | 2018/03/08 05:35 | Shinji Hazawa v Soichiro Moritani | 6-7,2-6 |
| ITF Japan F1 | 2018/03/07 06:00 | Soichiro Moritani v Brydan Klein | 7-6,7-5 |
| ITF Hong Kong F6 | 2018/01/01 02:00 | Soichiro Moritani v Emil Ruusuvuori | 0-6,4-6 |
| ITF Japan F1 | 2018/03/03 05:30 | Kazuki Shimizu v Masaki Sasai | 3-6,2-6 |
| ITF Turkey F7 | 2018/02/19 08:00 | Yuto Sakai v Kazuki Shimizu | 6-2,6-3 |
| ITF Turkey F7 | 2018/02/18 11:30 | Christian Samuelsson v Kazuki Shimizu | 6-3,3-6,4-6 |
| ITF Turkey F7 | 2018/02/18 06:30 | Kazuki Shimizu v Ryan Nijboer | 6-4,3-6,6-4 |
| ITF Turkey F6 | 2018/02/13 07:00 | Kazuki Shimizu v Juan Pablo Varillas | 6-7,4-6 |
| ITF Turkey F6 | 2018/02/12 09:00 | Kazuki Shimizu v Zlatan Palazov | 6-0,6-4 |
| ITF Turkey F6 | 2018/02/11 07:00 | Cheong Hwi Kim v Kazuki Shimizu | 5-7,0-6 |
| ITF Turkey F6 | 2018/02/10 09:00 | Osmancan Soyler v Kazuki Shimizu | 0-6,2-6 |