Stadium: Indoor D1 Round: 62 Ground: Clay
| ITF Japan F7 | 2016/06/07 01:00 | Ryotaro Matsumura v Katsuki Nagao | 4-6,4-6 |
| ITF Japan F7 Qual | 2016/06/05 01:00 | Shunrou Takeshima v Ryotaro Matsumura | 5-7,1-6 |
| ITF Japan F7 Qual | 2016/06/04 01:00 | David Barclay v Ryotaro Matsumura | 1-6,2-6 |
| ITF Japan F5 | 2015/06/03 06:30 | Ryotaro Matsumura v Keisuke Watanuki | 6-2,4-6,0-6 |
| ITF Japan F5 | 2015/06/01 02:30 | Ryotaro Matsumura v Soichiro Moritani | 6-2,6-4 |
| ITF Japan F5 | 2015/05/30 01:00 | Ryotaro Matsumura v Shinta Fujii | 6-3,6-1 |
| ITF Japan F4 | 2015/04/01 01:00 | Ryotaro Matsumura v Shuichi Sekiguchi | 2-6,4-6 |
| ITF Japan F4 | 2015/03/31 03:50 | Masaki Sasai v Ryotaro Matsumura | 2-6,2-6 |
| 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 Japan F7 Qual | 2018/06/02 01:00 | Masaya Kobayashi v Kazuki Shimizu | 6-7,3-6 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Sho Shimabukuro v Kazuki Shimizu | 6-2,6-1 |
| ITF Japan F4 | 2018/03/24 00:00 | Ryota Tanuma v Kazuki Shimizu | 6-2,6-1 |
| ITF Japan F3 | 2018/03/17 04:00 | Soichiro Moritani v Kazuki Shimizu | 6-2,6-3 |