Stadium: Hard Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF Turkey F7 | 2018/02/18 11:00 | Yuto Sakai v Franco Capalbo | 6-4,6-1 |
| ITF Turkey F7 | 2018/02/18 06:30 | Orlando Luz v Yuto Sakai | 6-1,6-7,4-6 |
| ITF Turkey F6 | 2018/02/11 06:00 | Yuto Sakai v Andrei Stefan Apostol | 6-4,5-7,3-6 |
| ITF Hong Kong F6 | 2017/12/31 03:00 | Yuto Sakai v Alberto Lim | 6-7,4-6 |
| ITF Hong Kong F5 | 2017/12/24 02:00 | Chan-Yeong Oh v Yuto Sakai | 6-3,6-3 |
| ITF Hong Kong F5 | 2017/12/23 02:00 | Yuto Sakai v Congsup Congcar | 6-4,6-4 |
| Challenger Toyota Qual | 2017/11/11 07:35 | Hiroyasu Ehara v Yuto Sakai | 6-7,6-2,6-3 |
| Challenger Toyota Qual | 2017/11/11 02:15 | Yuto Sakai v Masaki Osafune | 7-6,1-6,6-1 |
| 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 |
| ITF Guam F1 | 2017/06/17 01:30 | Kazuki Shimizu v Yuki Nakamura | 4-6,6-2,4-6 |
| ITF Japan F6 Qual | 2017/05/27 01:00 | Hiroki Horikiri v Kazuki Shimizu | 4-6,6-3,6-4 |