Round: 25 Ground: Hardcourt outdoor
| ITF China F4 Qual | 2015/04/19 02:00 | Issei Okamura v Ruikai Wang | 6-3,6-4 |
| Challenger Anning Qual | 2017/04/22 02:00 | Ruikai Wang v Jackson Withrow | 2-6,3-6 |
| ITF Indonesia F6 | 2017/04/13 03:00 | Max Purcell v Ruikai Wang | 6-2,6-4 |
| ITF Indonesia F6 | 2017/04/12 03:00 | Justin Barki v Ruikai Wang | 1-6,4-6 |
| ITF Indonesia F6 | 2017/04/10 03:00 | Ruikai Wang v Jonathan Binding | 6-3,7-6 |
| ITF Indonesia F6 | 2017/04/09 03:00 | Ruikai Wang v Ioan Dan Abrudan | 7-5,6-3 |
| ITF Indonesia F5 | 2017/04/05 03:00 | Kittiphong Wachiramanowong v Ruikai Wang | 6-2,7-5 |
| ITF Indonesia F5 Qual | 2017/04/03 04:15 | Ruikai Wang v Aoxiong Wang | 6-3,6-3 |
| ITF Indonesia F5 Qual | 2017/04/02 04:55 | Ruikai Wang v Hsin Lin | 6-1,4-6,6-2 |
| Challenger Anning Qual | 2017/04/22 03:35 | Issei Okamura v Denys Molchanov | 6-4,3-6,4-6 |
| Challenger Taipei Qual | 2017/04/17 04:35 | Ruan Roelofse v Issei Okamura | 6-4,6-2 |
| Challenger Taipei Qual | 2017/04/16 05:55 | Shao-Fan Liu v Issei Okamura | 6-7,6-4,3-6 |
| ITF Japan F5 | 2017/04/04 00:30 | Issei Okamura v Takao Suzuki | 6-7,3-6 |
| ITF Japan F4 | 2017/03/28 03:00 | Kaito Uesugi v Issei Okamura | 6-3,6-3 |
| ITF Japan F3 | 2017/03/22 06:00 | Shane Vinsant v Issei Okamura | 6-2,6-3 |
| ITF Japan F3 | 2017/03/20 02:35 | Daisuke Sumizawa v Issei Okamura | 2-6,2-6 |
| ITF Japan F2 | 2017/03/13 04:00 | Issei Okamura v Nam Hoang Ly | 2-6,2-6 |