Round: 26 Ground: Hardcourt outdoor
| ITF Japan F5 | 2016/04/08 06:25 | Niki, Takuto v Katayama, Sho | 7-6,2-6,3-6 |
| ITF Japan F2 | 2017/03/13 04:00 | Katayama, Sho v Ehara, Hiroyasu | 6-3,7-6 |
| 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 Oh, Chan-Yeong | 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 Japan F2 | 2017/03/14 04:15 | Tanaka, Yunosuke v Niki, Takuto | 4-6,4-6 |
| ITF Japan F1 | 2017/03/12 02:00 | Yusuke Takahashi v Niki, Takuto | 7-5,6-3 |
| 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 | Itsusaki, Kaito v Niki, Takuto | 2-6,4-6 |
| ITF Japan F1 | 2017/03/09 01:00 | Kikuchi, Gengo v Niki, Takuto | 0-6,4-6 |
| ITF Japan F1 | 2017/03/08 02:30 | Fujii, Shinta v Niki, Takuto | 6-7,2-6 |
| Challenger Yokohama | 2017/03/01 01:00 | Whittington, Andrew v Niki, Takuto | 6-4,7-6 |
| Challenger Yokohama | 2017/02/28 02:20 | Niki, Takuto v Shiga, Masato | 6-1,6-1 |