Round: 54 Ground: Synthetic outdoor
| ITF Japan F6 Qual | 2017/05/29 03:00 | Tashiro, Yuga v Daisuke Sumizawa | 6-1,6-1 |
| ITF Japan F6 Qual | 2017/05/28 06:00 | Tashiro, Yuga v Daisuke Sumizawa | 6-1,6-1 |
| ITF Japan F6 Qual | 2017/05/27 01:00 | Yuichiro Inui v Daisuke Sumizawa | 2-6,3-6 |
| ITF Japan F5 | 2017/04/01 02:00 | Kawakami, Rimpei v Daisuke Sumizawa | 7-5,6-4 |
| ITF Japan F4 | 2017/03/27 08:00 | Daisuke Sumizawa v Tomohiro Masabayashi | 0-6,0-6 |
| ITF Japan F3 | 2017/03/20 02:35 | Daisuke Sumizawa v Issei Okamura | 2-6,2-6 |
| ITF China F3 Qual | 2017/02/26 01:30 | Li, Yuanfeng v Daisuke Sumizawa | 7-6,6-4 |
| ITF China F3 Qual | 2017/02/25 03:00 | Liu, Shiyou v Daisuke Sumizawa | 2-6,2-6 |
| ITF Japan F6 | 2017/05/30 02:20 | Masaya Kobayashi v Luca Castelnuovo | 6-4,7-6 |
| ITF Japan F6 Qual | 2017/05/29 01:00 | Luca Castelnuovo v Tagashira, Kento | 7-5,6-1 |
| ITF Japan F6 Qual | 2017/05/27 01:00 | Luca Castelnuovo v Verryth, Mark | 6-3,6-2 |
| ITF Qatar F3 Qual | 2017/04/16 13:25 | Luca Castelnuovo v Nickels, Christophe | 6-7,5-7 |
| ITF Qatar F2 Qual | 2017/04/10 14:40 | Luca Castelnuovo v Shakhnubaryan, Artur | 4-6,3-6 |
| ITF Qatar F2 Qual | 2017/04/09 16:20 | Dembek, Michal v Luca Castelnuovo | 6-7,6-2,4-6 |
| ITF Qatar F2 Qual | 2017/04/08 14:25 | Luca Castelnuovo v Ramirez, Juan David | 7-5,7-6 |
| ITF Qatar F1 Qual | 2017/04/03 12:00 | Luca Castelnuovo v Shakhnubaryan, Artur | 7-5,5-7,2-6 |