Round: 62 Ground: Hardcourt outdoor
| ITF Guam F1 | 2017/06/19 01:15 | Connor Farren v Daisuke Sumizawa | 7-5,6-1 |
| ITF Guam F1 | 2017/06/17 00:00 | Daisuke Sumizawa v Joseph W. Van Meter | 4-6,6-4,6-2 |
| ITF Japan F8 | 2017/06/12 00:00 | Daisuke Sumizawa v Yuki Matsuo | 3-6,4-6 |
| ITF Japan F8 | 2017/06/10 00:00 | Daisuke Sumizawa v Takuya Komura | 6-4,6-0 |
| ITF Japan F7 | 2017/06/03 01:00 | Daisuke Sumizawa v Luca Castelnuovo | 3-6,3-6 |
| ITF Japan F6 Qual | 2017/05/29 03:00 | Yuga Tashiro v Daisuke Sumizawa | 6-1,6-1 |
| ITF Japan F6 Qual | 2017/05/28 06:00 | Yuga Tashiro 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 Chinese Taipei F1 Qual | 2017/06/11 02:00 | Leo Tang v Jad Ballout | 6-7,2-6 |
| ITF China F9 Qual | 2017/05/29 02:00 | Ang Ji v Leo Tang | 6-3,6-2 |
| ITF China F8 Qual | 2017/05/20 01:00 | Leo Tang v Hao Wu | 2-6,3-6 |
| ITF China F4 Qual | 2017/04/02 06:05 | Hu Liu v Leo Tang | 6-3,6-1 |
| ITF Hong Kong F1 | 2016/12/31 07:00 | Kai Yuen Leung v Leo Tang | 6-0,6-0 |
| ITF Hong Kong F4 | 2016/12/17 23:00 | Leo Tang v Ognian Kolev | 4-6,1-6 |
| ITF Chinese Taipei F3 | 2016/10/23 01:30 | Leo Tang v Michael Commings | 1-6,2-6 |
| ITF Hong Kong F1 Qual | 2015/06/06 02:00 | Leo Tang v Li-Wei Tan | 1-6,1-6 |