Round: 26 Ground: Clay
| ITF Japan F5 | 2017/04/03 02:25 | Masamichi Imamura v Chan-Yeong Oh | 6-7,6-4,3-6 |
| ITF Japan F4 | 2017/03/29 05:30 | Chan-Yeong Oh v Yuichi Ito | 4-6,1-6 |
| ITF Japan F4 | 2017/03/28 01:00 | Chan-Yeong Oh v Yuki Matsuo | 6-1,6-1 |
| ITF Japan F4 | 2017/03/25 02:00 | Chan-Yeong Oh v Hayato Kudo | 6-3,6-3 |
| ITF Japan F3 | 2017/03/23 01:00 | Shane Vinsant v Chan-Yeong Oh | 6-2,3-6,6-3 |
| ITF Japan F3 | 2017/03/22 03:00 | Chan-Yeong Oh v Soichiro Moritani | 6-3,3-6,6-4 |
| ITF Japan F3 | 2017/03/20 01:00 | Masaya Kobayashi v Chan-Yeong Oh | 4-6,2-6 |
| ITF Japan F3 | 2017/03/19 01:00 | Chan-Yeong Oh v Naoya Maesaki | 6-2,6-4 |
| ITF Japan F5 | 2017/04/04 00:30 | Yuichi Ito v Takuto Niki | 3-6,4-6 |
| ITF Japan F4 | 2017/04/02 02:00 | Takuto Niki v Yusuke Takahashi | 2-6,2-6 |
| ITF Japan F4 | 2017/04/01 01:00 | Takuto Niki v Kaito Uesugi | 6-3,6-3 |
| ITF Japan F4 | 2017/03/31 02:40 | Takuto Niki v Renta Tokuda | 6-2,6-7,7-5 |
| ITF Japan F4 | 2017/03/30 03:15 | Takuto Niki v Sho Shimabukuro | 6-7,6-3,7-6 |
| ITF Japan F4 | 2017/03/29 03:40 | Takuto Niki v Shunrou Takeshima | 6-2,7-5 |
| ITF Japan F3 | 2017/03/24 03:10 | Takuto Niki v Nam Hoang Ly | 4-6,6-4,6-0 |
| ITF Japan F3 | 2017/03/23 01:30 | Wishaya Trongcharoenchaikul v Takuto Niki | 7-6,1-6,4-6 |