Round: 25 Ground: Hardcourt outdoor
| ITF Japan F1 | 2017/03/10 01:00 | Yusuke Takahashi v Katayama, Sho | 6-3,6-4 |
| ITF Japan F1 | 2017/03/09 02:25 | Ito, Yuichi v Katayama, Sho | 0-6,0-6 |
| ITF Japan F1 | 2017/03/07 01:00 | Katayama, Sho v Gao, Xin | 6-2,6-4 |
| ITF Indonesia F3 | 2017/02/24 03:00 | Katayama, Sho v Sho Shimabukuro | 6-7,1-6 |
| ITF Indonesia F3 | 2017/02/23 03:00 | Katayama, Sho v Chan-Yeong Oh | 7-6,7-6 |
| ITF Indonesia F3 | 2017/02/22 05:40 | Katayama, Sho v Robin Thour | 6-3,6-2 |
| ITF Indonesia F2 | 2017/02/18 05:55 | Katayama, Sho v Kelly, Dayne | 4-6,6-7 |
| ITF Indonesia F2 | 2017/02/17 05:45 | Katayama, Sho v Shiga, Masato | 6-4,7-6 |
| ITF Japan F1 | 2017/03/11 01:00 | Ehara, Hiroyasu v Niki, Takuto | 2-6,1-6 |
| ITF Japan F1 | 2017/03/10 01:00 | Noh, Sang-Woo v Ehara, Hiroyasu | 6-1,3-6,2-6 |
| ITF Japan F1 | 2017/03/09 03:30 | Ehara, Hiroyasu v Yuta Shimizu | 7-6,6-4 |
| ITF Japan F1 | 2017/03/08 01:00 | Kato, Shoma v Ehara, Hiroyasu | 3-6,2-6 |
| ITF Japan F1 | 2017/03/04 01:00 | Ehara, Hiroyasu v Kousuke Ogura | 6-2,6-2 |
| Yokohama, Japan, Qualifying | 2017/02/26 03:20 | Ehara, Hiroyasu v Niki, Takuto | 7-6,1-6,3-6 |
| Yokohama, Japan, Qualifying | 2017/02/25 06:25 | Ehara, Hiroyasu v Masamichi Imamura | 6-3,6-4 |
| ITF Egypt F4 | 2017/02/10 12:30 | Hossam, Youssef v Ehara, Hiroyasu | 6-4,6-2 |