Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/02 10:35 | Wattanakul, Pol v Daisuke Sumizawa | 1-6,6-2,3-6 |
| ITF M15 Anseong | 2019/06/25 02:45 | Park, Uisung v Daisuke Sumizawa | 6-4,3-6,6-2 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/19 01:00 | Kwon, OH-Hee v Daisuke Sumizawa | 4-6,7-6,6-3 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/11 06:30 | Sho Shimabukuro v Daisuke Sumizawa | 6-4,6-3 |
| Karuizawa, Singles M-ITF-JPN-07A | 2019/05/30 01:00 | Daisuke Sumizawa v Moritani, Soichiro | 2-6,6-4,6-7 |
| Karuizawa, Singles M-ITF-JPN-07A | 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 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/03 03:45 | Mendoza, Jurence Zosimo v Xia, Haitong | 3-6,6-4,1-6 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/02 01:30 | Xia, Haitong v Krainer, L. | 7-6,6-3 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/01 07:50 | Xia, Haitong v Zhenxiong Dong | 6-2,6-1 |
| Shenzhen, Simples M-ITF-CHN-09A | 2019/06/10 05:15 | Xia, Haitong v Wang, Chuhan | 2-6,3-6 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/30 04:30 | Xia, Haitong v Gao, Xin | 1-6,2-6 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/29 02:00 | Xia, Haitong v Tan, Li-Wie | 6-3,6-3 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/28 03:20 | Xia, Haitong v Linang Xiao | 2-6,6-1,10-7 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/27 02:00 | Xia, Haitong v Zhang, Naifu | 6-2,6-1 |