Estadio: Court 2 Round: 25 Ground: Clay
| ITF M15 Kofu | 2019/03/18 00:30 | Kazuki Shimizu v Kousuke Ogura | 6-7,5-7 |
| ITF M25 Matsuyama | 2019/04/10 03:30 | Gage Brymer v Kazuki Shimizu | 7-6,5-7,6-0 |
| ITF M25 Matsuyama | 2019/04/09 01:00 | Daisuke Sumizawa v Kazuki Shimizu | 6-3,4-6,6-10 |
| ITF M25 Matsuyama | 2019/04/08 01:00 | Kazuki Shimizu v Yuichiro Inui | 6-2,6-0 |
| 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 Japón F8 | 2018/06/11 00:30 | Ryotaro Matsumura v Kazuki Shimizu | 7-5,6-3 |
| ITF Japón F8 | 2018/06/09 05:30 | Kazuki Shimizu v Kyohei Yamanaka | 6-1,7-6 |
| ITF M25 Wuhan | 2019/05/07 03:15 | Cheng-Yu Yu v Kousuke Ogura | 6-4,6-3 |
| ITF M25 Wuhan | 2019/05/06 07:50 | Kousuke Ogura v Rimpei Kawakami | 6-4,6-4 |
| ITF M15 Wuhan | 2019/05/01 07:15 | Kuan-Yi Lee v Kousuke Ogura | 6-3,6-2 |
| ITF M15 Wuhan | 2019/04/30 02:00 | Shi Hong Zeng v Kousuke Ogura | 2-6,7-6,7-10 |
| ITF M15 Wuhan | 2019/04/29 03:45 | Wai Yu Kai v Kousuke Ogura | 3-6,4-6 |
| ITF M25 Matsuyama | 2019/04/11 01:00 | Naoki Tajima v Kousuke Ogura | 6-4,6-0 |
| ITF M25 Matsuyama | 2019/04/09 03:00 | Congsup Congcar v Kousuke Ogura | 5-7,5-7 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Kousuke Ogura v Kento Takeuchi | 2-6,4-6 |