Stadium: Court 10 Round: 54 Ground: Hardcourt outdoor
| ITF M15 - Tsukuba | 2019/03/25 01:00 | Mick Veldheer v Kazuki Shimizu | 6-1,6-4 |
| ITF M15 - Kofu | 2019/03/18 00:30 | Kazuki Shimizu v Kousuke Ogura | 6-7,5-7 |
| ITF M15 Nishi-Tama | 2019/03/05 01:00 | Kazuki Shimizu v Daisuke Sumizawa | 2-6,2-6 |
| ITF Japan F8 | 2018/06/11 00:30 | Ryotaro Matsumura v Kazuki Shimizu | 7-5,6-3 |
| ITF Japan F8 | 2018/06/09 05:30 | Kazuki Shimizu v Kyohei Yamanaka | 6-1,7-6 |
| ITF Japan F8 | 2018/06/09 01:00 | Winter Meagher v Kazuki Shimizu | 7-5,4-6,4-6 |
| ITF Japan F7 | 2018/06/04 03:10 | Kazuki Shimizu v Jumpei Yamasaki | 2-6,4-6 |
| ITF Japan F7 Qual | 2018/06/03 01:00 | Kazuki Shimizu v David Barclay | 6-0,6-4 |
| ITF M15 - Kashiwa | 2019/04/01 00:00 | Yuichiro Inui v Gengo Kikuchi | 4-6,2-6 |
| ITF M15 - Mornington | 2019/03/26 23:00 | Yuichiro Inui v Stefan Skadarka | 3-6,3-6 |
| ITF M15 - Mornington | 2019/03/25 23:00 | Yuichiro Inui v Joseph W. Van Meter | 6-3,6-3 |
| ITF M15 - Mornington | 2019/03/24 23:00 | Yuichiro Inui v Matyas Fuele | 4-6,6-2,10-8 |
| ITF M15 - Mornington | 2019/03/17 23:00 | Yuichiro Inui v William Ma | 6-7,4-6 |
| ITF M15 - Nishi-Tokyo | 2019/03/11 03:30 | Aoran Wang v Yuichiro Inui | 7-6,6-4 |
| ITF M15 Nishi-Tama | 2019/03/05 03:00 | Tomohiro Masabayashi v Yuichiro Inui | 6-2,6-1 |
| ITF M15 Anning | 2019/01/07 01:30 | Anirudh Chandrasekar v Yuichiro Inui | 7-5,6-3 |