Stadium: Court 3 Round: 25
| ITF Women Kashiwa | 2018/04/05 01:00 | Erika Sema v Destanee Aiava | 3-6,4-6 |
| ITF Women Kashiwa | 2018/04/03 01:00 | Peangtarn Plipuech v Erika Sema | 3-6,3-6 |
| ITF Women Kofu Qual | 2018/03/26 01:00 | Erika Sema v Alina Silich | 5-7,6-3,6-7 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Erika Sema v Mitsumi Kawasaki | 6-0,6-2 |
| 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 Kashiwa | 2018/04/05 02:50 | Ksenia Lykina v Bianca Andreescu | 5-7,3-6 |
| ITF Women Kashiwa | 2018/04/03 02:50 | Kurumi Nara v Ksenia Lykina | 6-3,5-7,5-7 |
| ITF Women Kashiwa Qual | 2018/04/02 03:15 | Ksenia Lykina v Ramu Ueda | 6-2,7-6 |
| ITF Women Kashiwa Qual | 2018/04/01 04:30 | Ksenia Lykina v Ji-Hee Choi | 6-3,3-6,6-2 |
| ITF Women Kofu | 2018/03/28 03:20 | Shiho Akita v Ksenia Lykina | 7-6,4-6,6-3 |
| ITF Women Kofu Qual | 2018/03/26 01:00 | Ksenia Lykina v Yuki Kristina Chiang | 7-5,7-5 |
| ITF Women Kofu Qual | 2018/03/25 01:00 | Ksenia Lykina v Ayumi Koshiishi | 7-5,6-7,6-3 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ksenia Lykina v Chihiro Takayama | 7-6,6-3 |