Stadium: Center Court Round: 54 Ground: Hardcourt outdoor
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/09 03:10 | Yan Bai v Daisuke Sumizawa | 6-3,6-1 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/08 03:30 | Ray Ho v Daisuke Sumizawa | 6-7,3-6 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/07 02:00 | Zheng, Weiqiang v Daisuke Sumizawa | 6-2,6-7,7-10 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/09 01:00 | Daisuke Sumizawa v Shimizu, Kazuki | 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 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/25 23:00 | Daisuke Sumizawa v Skadarka, Stefan | 6-3,6-7,7-10 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/24 23:00 | Daisuke Sumizawa v Osborne, Zac | 6-2,6-1 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/17 23:00 | Daisuke Sumizawa v Bosancic, Thomas | 3-6,4-6 |
| ITF - M25 Luan | 2019/05/13 02:00 | Mingzhou, Zhou v Ruikai Wang | 3-6,6-7 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/06 07:25 | Ruikai Wang v Hanyi Liu | 4-6,4-6 |
| Wuhan, Singles Qualifying M-ITF-CHN-04A | 2019/04/29 02:00 | Chen, Liran v Ruikai Wang | 6-2,7-6 |
| ITF M15 Anning | 2019/01/14 01:30 | Lee, Young Seok v Ruikai Wang | 6-3,5-7,10-3 |
| ITF M15 Anning | 2019/01/07 01:30 | Ruikai Wang v Grigoriy Lomakin | 2-6,2-6 |
| ITF M15 Anning | 2019/01/02 02:00 | Ruikai Wang v Na, Jung-Woong | 2-6,2-6 |
| ITF M15 Anning | 2018/12/31 08:30 | Hanyi Liu v Ruikai Wang | 4-6,2-6 |
| ITF M15 Anning | 2018/12/31 01:30 | Yuquan Jin v Ruikai Wang | 2-6,4-6 |