Stadium: Court 9 Round: 26 Ground: Clay
| ITF M15 Karuizawa | 2019/05/28 01:00 | Daisuke Sumizawa v Yuichiro Inui | 6-4,7-6 |
| ITF M25 Luan | 2019/05/15 06:30 | Daisuke Sumizawa v Jie Cui | 4-6,2-6 |
| ITF M25 Luan | 2019/05/14 02:00 | Daisuke Sumizawa v Ruikai Wang | 6-4,6-3 |
| ITF M25 Wuhan | 2019/05/09 03:10 | Yan Bai v Daisuke Sumizawa | 6-3,6-1 |
| ITF M25 Wuhan | 2019/05/08 03:30 | Ray Ho v Daisuke Sumizawa | 6-7,3-6 |
| ITF M25 Wuhan | 2019/05/07 02:00 | Weiqiang Zheng v Daisuke Sumizawa | 6-2,6-7,7-10 |
| ITF M25 Matsuyama | 2019/04/09 01:00 | Daisuke Sumizawa v Kazuki Shimizu | 6-3,4-6,6-10 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Daisuke Sumizawa v Kazuki Nishiwaki | 6-2,2-6,8-10 |
| ITF M15 Karuizawa | 2019/05/28 02:30 | Tomohiro Masabayashi v Soichiro Moritani | 3-6,3-6 |
| ITF M15 Nishi-Tama | 2019/03/06 01:00 | Soichiro Moritani v Keisuke Saitoh | 2-6,0-6 |
| ITF M15 Anning | 2019/01/11 05:10 | Soichiro Moritani v Shao-Fan Liu | 7-5,3-6,3-6 |
| ITF M15 Anning | 2019/01/10 03:45 | Soichiro Moritani v Kento Takeuchi | 2-6,6-3,7-5 |
| ITF M15 Anning | 2019/01/09 07:30 | Sora Fukuda v Soichiro Moritani | 3-6,2-6 |
| ITF M15 Anning | 2019/01/01 03:30 | Nitin Kumar Sinha v Soichiro Moritani | 6-1,6-7,6-3 |
| Challenger Kobe | 2018/11/10 05:30 | Soichiro Moritani v Tung-Lin Wu | 2-6,6-4,3-6 |
| ITF Thailand F6 | 2018/10/09 02:30 | Matic Spec v Soichiro Moritani | 6-1,5-7,6-3 |