Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF Women Toyota | 2018/03/16 06:30 | Erika Sema v Katherine Sebov | 4-6,1-6 |
| ITF Women Toyota | 2018/03/15 01:00 | Rika Fujiwara v Erika Sema | 5-7,5-7 |
| ITF Women Toyota | 2018/03/14 02:45 | Erika Sema v Jia-Jing Lu | 6-4,7-6 |
| ITF Women Yokohama | 2018/03/07 01:00 | Erika Sema v Ayla Aksu | 2-6,0-6 |
| ITF Women Perth | 2018/02/22 04:45 | Erika Sema v Irina Khromacheva | 2-6,2-6 |
| ITF Women Perth | 2018/02/21 03:15 | Miyabi Inoue v Erika Sema | 4-6,6-7 |
| ITF Women Perth | 2018/02/14 05:25 | Eri Hozumi v Erika Sema | 6-3,5-7,6-1 |
| ITF Women Burnie | 2018/01/30 03:25 | Erika Sema v Alize Lim | 6-7,5-7 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Mayuka Aikawa v Kei Kato | 6-3,3-6,6-1 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Himeno Sakatsume v Kei Kato | 3-6,3-6 |
| ITF Women Nishi-Tama | 2018/03/17 04:00 | Kei Kato v Ayumi Koshiishi | 7-5,6-4 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Shiho Akita v Kei Kato | 6-0,6-3 |
| ITF Women Tokyo Qual | 2017/11/04 01:00 | Kei Kato v Tori Kinard | 7-6,3-6,1-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Kei Kato v Ange Oby Kajuru | 1-6,4-6 |
| ITF Women Tsukuba Qual | 2017/08/20 00:30 | Kei Kato v Yukina Saigo | 1-6,4-6 |
| ITF Women Tokyo Qual | 2017/06/05 01:00 | Kyoka Okamura v Kei Kato | 6-1,6-1 |