Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF Women Kofu Qual | 2018/03/24 03:00 | Erika Sema v Kei Kato | 4-6,6-3,6-0 |
| 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 Kofu Qual | 2018/03/24 03:00 | Chinatsu Shimizu v Mitsumi Kawasaki | 3-6,6-4,2-6 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Mitsumi Kawasaki v Chisa Hosonuma | 6-1,4-6,2-6 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Mitsumi Kawasaki v Yumeko Yoshitomi | 6-1,6-0 |
| ITF Women Nishi-Tama | 2018/03/17 03:00 | Mitsumi Kawasaki v Shiho Shibata | 7-5,7-5 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Mitsumi Kawasaki v Misa Eguchi | 0-6,0-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Sakura Hondo v Mitsumi Kawasaki | 1-6,4-6 |
| ITF Women Hong Kong | 2018/01/02 03:50 | Mitsumi Kawasaki v Kwan Yau Ng | 5-7,5-7 |
| ITF Women Hong Kong | 2017/12/31 02:00 | Mitsumi Kawasaki v Sheena Jade Masuda Karrasch | 6-1,6-1 |