Stadium: Court 4 Round: 28 Ground: Hardcourt outdoor
| ITF Japan F3 MD | 2018/03/22 10:00 | Kikuchi G / Takeshima S v Ito T / Uesugi K | 6-2,5-7,10-5 |
| ITF Japan F3 MD | 2018/03/20 08:20 | Hazawa S / Okamura I v Kikuchi G / Takeshima S | 3-6,3-6 |
| ITF Japan F1 MD | 2018/03/08 08:55 | Kibi Y / Onozawa A v Kikuchi G / Takeshima S | 6-2,6-3 |
| ITF Japan F1 MD | 2018/03/06 04:30 | Kikuchi G / Takeshima S v Kureoka T / Takamisawa T | 6-4,6-1 |
| ITF Japan F8 MD | 2017/06/14 07:45 | Noguchi R / Shimizu Y v Kikuchi G / Takeshima S | 7-5,2-6,10-8 |
| ITF Japan F7 MD | 2017/06/09 05:35 | Fukuda S / Sasai M v Kikuchi G / Takeshima S | 4-6,6-4,10-6 |
| ITF Japan F7 MD | 2017/06/08 06:00 | Kikuchi G / Takeshima S v Okamura I / Takeuchi K | 6-4,7-6 |
| ITF Japan F7 MD | 2017/06/06 06:20 | Kikuchi G / Takeshima S v Matsuo Y / Sumizawa D | 6-1,6-1 |
| ITF Japan F3 MD | 2018/03/22 09:10 | Lee E / Lim E v Ehara H / Katayama S | 6-7,3-6 |
| ITF Japan F3 MD | 2018/03/19 07:55 | Hashikawa Y / Oku H v Ehara H / Katayama S | 4-6,3-6 |
| ITF Japan F2 MD | 2018/03/13 06:55 | Lee E / Lim E v Ehara H / Katayama S | 7-6,3-6,10-8 |
| Challenger Yokohama Qual MD | 2018/02/25 04:00 | Ehara H / Katayama S v Donati/Leshem | 6-7,3-6 |
| Chine F14, Doubles | 2017/07/28 07:00 | Huang T-H / Wang C v Ehara H / Katayama S | 3-6,3-6 |
| Chine F14, Doubles | 2017/07/26 06:00 | Kim C-E / Sekiguchi S v Ehara H / Katayama S | 4-6,1-6 |
| Chine F14, Doubles | 2017/07/24 09:55 | Ehara H / Katayama S v Chiu Y H / Lee K-Y | 7-5,7-6 |
| ITF Singapore F2 MD | 2017/06/02 05:00 | Ehara H / Katayama S v Alcantara F C / Verbeek S | 3-6,0-6 |