Stadium: Court 1 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Karuizawa | 2019/05/30 01:00 | Daisuke Sumizawa v Soichiro Moritani | 2-6,6-4,6-7 |
| ITF M15 Nonthaburi | 2019/11/26 02:30 | Blake Ellis v Daisuke Sumizawa | 6-3,4-6,10-8 |
| ITF M15 Nonthaburi | 2019/11/25 03:50 | Natthasith Kunsuwan v Daisuke Sumizawa | 7-6,6-7,9-11 |
| ITF M15 Nonthaburi | 2019/11/24 09:00 | Noppadol Noikor v Daisuke Sumizawa | 2-6,5-7 |
| Challenger Pune | 2019/11/11 12:30 | Dhruv Sunish v Daisuke Sumizawa | 7-6,6-2 |
| ITF M15 Meshref | 2019/11/06 09:40 | Daisuke Sumizawa v Alec Adamson | 2-6,2-6 |
| ITF M25 Tay Ninh | 2019/10/11 03:00 | Daisuke Sumizawa v Billy Harris | 2-6,4-6 |
| 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 M15 Nonthaburi | 2019/11/26 04:30 | Soichiro Moritani v Young Seok Kim | 5-7,3-6 |
| ITF M15 Nonthaburi | 2019/11/25 04:20 | Soichiro Moritani v Vorachon Rakpuangchon | 6-4,6-3 |
| ITF M15 Nonthaburi | 2019/11/24 08:20 | Soichiro Moritani v Tonkla Mulada | 6-4,6-1 |
| ITF M15 Meshref | 2019/11/15 08:00 | Soichiro Moritani v Kai Wehnelt | 6-2,4-6,1-6 |
| ITF M15 Meshref | 2019/11/14 09:15 | Soichiro Moritani v Jirat Navasirisomboon | 6-2,6-2 |
| ITF M15 Meshref | 2019/11/13 10:35 | Soichiro Moritani v Anurag Nenwani | 6-1,6-1 |
| ITF M15 Meshref | 2019/11/06 10:55 | Soichiro Moritani v Marko Tepavac | 3-6,3-6 |
| ITF M15 Changwon | 2019/10/16 01:00 | Dusty H. Boyer v Soichiro Moritani | 7-6,6-1 |