Stadium: Court A Round: 44 Ground: Hardcourt outdoor
| 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 - Nonthaburi M25 | 2019/07/31 06:20 | Marsel Ilhan v Daisuke Sumizawa | 6-4,6-2 |
| ITF - Nonthaburi M25 | 2019/07/30 02:30 | Daisuke Sumizawa v Cameron Green | 6-4,5-7,10-8 |
| ITF - Nonthaburi M25 | 2019/07/29 05:00 | Daisuke Sumizawa v Hao Yuan Ng | 2-6,6-3,10-6 |
| ITF - Nonthaburi M25 | 2019/07/24 02:00 | Daisuke Sumizawa v Sergey Fomin | 3-6,1-6 |
| ITF M25 Tay Ninh Qual | 2019/10/07 02:00 | Quoc Uy Vo v Qun Gao | 2-6,2-6 |
| ITF M25 Tay Ninh Qual | 2019/10/06 03:30 | Kacper Long Vu v Qun Gao | 2-6,2-6 |
| ITF - Tay Ninh M25 | 2019/10/01 04:25 | Qun Gao v Arthur Weber | 1-6,6-2,5-10 |
| ITF - Tay Ninh M25 | 2019/09/30 06:10 | Qun Gao v Kaiwei Wang | 6-1,6-0 |
| ITF - Novi Sad M15 | 2019/08/05 08:00 | Matvey Khomentovskiy v Qun Gao | 6-3,6-3 |
| ITF M25 Shenzhen | 2019/06/10 06:55 | Bingyu Yu v Qun Gao | 6-4,5-7,10-7 |
| ITF - Luzhou M25 | 2019/05/29 01:55 | Qun Gao v Bohua Dong | 6-4,6-2 |
| ITF - Luzhou M25 | 2019/05/28 03:35 | Ye Cong Mo v Qun Gao | 7-6,3-6,2-10 |