Stadium: Court 4 Round: 26
| ITF Japan F6 MD | 2018/04/12 05:45 | Ehara H / Katayama S v Kono Y / Sakai Y | 6-7,4-6 |
| ITF Japan F6 MD | 2018/04/11 04:45 | Ehara H / Katayama S v Kibi Y / Onozawa A | 6-3,6-2 |
| ITF Japan F5 MD | 2018/04/04 07:40 | Ehara H / Katayama S v Fujii S / Ochi M | 6-2,3-6,6-10 |
| ITF Japan F5 MD | 2018/04/02 07:40 | Ehara H / Katayama S v Chiu Y H / Grills J | 6-4,6-0 |
| ITF Japan F3 MD | 2018/03/23 02:45 | Seol J-M / Song M-K v Ehara H / Katayama S | 5-7,6-7 |
| ITF Japan F3 MD | 2018/03/23 01:30 | Kikuchi G / Takeshima S v Ehara H / Katayama S | 6-7,5-7 |
| 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 |