Round: 54 Ground: Clay
| ITF Japan F5 | 2017/04/01 02:00 | Yuichiro Inui v Naoki Tajima | 4-6,0-6 |
| ITF Japan F4 | 2017/03/25 03:00 | Aoran Wang v Yuichiro Inui | 6-4,6-2 |
| ITF Australia F3 Qual | 2017/03/18 03:00 | Puodziunas, Scott v Yuichiro Inui | 6-2,6-7,6-3 |
| ITF Australia F2 Qual | 2017/03/12 00:00 | Puodziunas, Scott v Yuichiro Inui | 6-4,6-2 |
| ITF Japan F1 | 2017/03/05 01:00 | Nagao, Katsuki v Yuichiro Inui | 6-3,6-2 |
| ITF Kuwait F3 | 2016/11/14 23:00 | Samaha, Giovani v Yuichiro Inui | 6-3,6-7,7-6 |
| Kuwait F3, Singles Qualifying | 2016/11/12 23:00 | Linge, Thomas v Yuichiro Inui | 2-6,1-6 |
| Kuwait F3, Singles Qualifying | 2016/11/12 08:33 | Redha, Abdulaziz v Yuichiro Inui | 5-7,0-6 |
| 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 China F2 Qual | 2017/02/20 04:20 | Tanuma, Ryota v Daisuke Sumizawa | 6-4,6-2 |
| ITF China F2 Qual | 2017/02/19 07:30 | Daisuke Sumizawa v Zheng, Weiqiang | 2-6,7-6,6-4 |
| ITF China F2 Qual | 2017/02/18 08:05 | Daisuke Sumizawa v Ji, Ang | 6-2,7-6 |