Stadion: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF - Japan F4 | 2017/03/27 08:00 | Daisuke Sumizawa v Tomohiro Masabayashi | 0-6,0-6 |
| ITF - M25 - Sapporo | 2023/09/06 01:00 | Keisuke Saitoh v Tomohiro Masabayashi | 4-6,6-3,1-6 |
| ITF - M25 - Sapporo | 2023/09/04 01:00 | Tomohiro Masabayashi v Chih Chi Huang | 6-3,6-3 |
| ITF - M25 - Tainan | 2023/08/24 02:00 | Ergi Kirkin v Tomohiro Masabayashi | 6-4,6-3 |
| ITF - M25 - Tainan | 2023/08/23 04:55 | Chien Hsun Lo v Tomohiro Masabayashi | 7-5,5-7,3-6 |
| ITF - M25 - Tainan | 2023/08/17 02:00 | Tomohiro Masabayashi v Makoto Ochi | 6-7,1-6 |
| ITF - M15 - Jakarta | 2023/06/27 05:00 | Nathan Anthony Barki v Tomohiro Masabayashi | 6-2,6-4 |
| ITF - M15 - Jakarta | 2023/06/17 02:00 | Omar Jasika v Tomohiro Masabayashi | 6-1,6-1 |
| ITF - M15 - Jakarta | 2023/06/15 03:15 | Hong-Lin Fu v Tomohiro Masabayashi | 2-6,7-5,6-7 |
| ITF - M25 - Hongkong | 2023/08/30 04:10 | Egor Gerasimov v Daisuke Sumizawa | 4-6,6-3,7-5 |
| ITF - M25 - Hongkong | 2023/08/28 02:00 | Daisuke Sumizawa v David Agung Susanto | 6-2,6-2 |
| ITF - M25 - Hongkong | 2023/08/27 02:30 | Daisuke Sumizawa v Pengyu Lu | 3-6,6-1,10-5 |
| ITF - M15 - Caloundra | 2023/08/04 04:20 | Daisuke Sumizawa v Luke Saville | 4-6,4-6 |
| ITF - M15 - Caloundra | 2023/08/03 00:00 | Daisuke Sumizawa v Jeremy Zhang | 6-2,6-1 |
| ITF - M15 - Caloundra | 2023/08/01 04:45 | Daisuke Sumizawa v Taiyo Yamanaka | 4-6,6-3,7-6 |
| ITF - M15 - Caloundra | 2023/07/28 01:00 | Daisuke Sumizawa v Thomas Fancutt | 6-3,6-7,3-6 |
| ITF - M15 - Caloundra | 2023/07/27 04:40 | Daisuke Sumizawa v Luke Sorensen | 6-4,6-3 |