Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Tay Ninh | 2019/10/09 02:00 | Jumpei Yamasaki v Christian Didier Chin | 6-2,6-0 |
| ITF M25 Tay Ninh | 2019/10/02 03:30 | Rimpei Kawakami v Jumpei Yamasaki | 6-1,6-3 |
| Challenger Kaohsiung | 2019/09/17 01:30 | Jumpei Yamasaki v Luke Saville | 6-7,4-6 |
| Challenger Kaohsiung | 2019/09/16 01:30 | Jumpei Yamasaki v Chang-Lin Tsai | 6-3,6-1 |
| Challenger Shanghai | 2019/09/11 05:45 | Jumpei Yamasaki v Enrique Lopez-Perez | 4-6,6-3,2-6 |
| Challenger Shanghai | 2019/09/10 02:30 | Kazuki Nishiwaki v Jumpei Yamasaki | 3-6,2-6 |
| Challenger Baotou | 2019/08/28 07:35 | Jumpei Yamasaki v Mukund Sasikumar | 0-6,2-6 |
| ITF M15 Jakarta | 2019/08/25 02:30 | Dusty H. Boyer v Jumpei Yamasaki | 3-6,1-6 |
| ITF M25 Tay Ninh | 2019/10/09 02:00 | Daisuke Sumizawa v Krittin Koaykul | 6-3,6-2 |
| ITF M25 Tay Ninh | 2019/10/08 02:00 | Daisuke Sumizawa v Qun Gao | 6-2,7-6 |
| ITF M25 Tay Ninh Qual | 2019/10/07 02:00 | Daisuke Sumizawa v Jagmeet Singh | 6-1,6-0 |
| ITF M15 Nanchang | 2019/10/03 03:40 | Chukang Wang v Daisuke Sumizawa | 6-4,2-6,6-4 |
| ITF M15 Nanchang | 2019/10/02 08:30 | Anirudh Chandrasekar v Daisuke Sumizawa | 6-3,2-6,1-6 |
| ITF M15 Nanchang | 2019/09/24 06:50 | Daisuke Sumizawa v Vladimir Ivanov | 2-6,2-6 |
| ITF M25 Nonthaburi | 2019/07/31 06:20 | Marsel Ilhan v Daisuke Sumizawa | 6-4,6-2 |
| ITF M25 Nonthaburi | 2019/07/30 02:30 | Daisuke Sumizawa v Cameron Green | 6-4,5-7,10-8 |