| ITF Women Toyota Qual | 2018/03/10 03:00 | Shiho Akita v Kei Kato | 6-0,6-3 |
| ITF Women Yokohama Qual | 2018/03/06 01:00 | Shiho Akita v Yexin Ma | 2-6,6-4,1-6 |
| ITF Women Yokohama Qual | 2018/03/04 06:00 | Shiho Akita v Suzuho Oshino | 6-4,7-5 |
| ITF Women Launceston Qual | 2018/02/04 23:00 | Shiho Akita v Alexandra Bozovic | 6-2,3-6,2-6 |
| ITF Women Launceston Qual | 2018/02/04 03:00 | Shiho Akita v Madison Frahn | 6-0,6-2 |
| ITF Women Burnie Qual | 2018/01/28 03:30 | Anastasia Pivovarova v Shiho Akita | 6-3,6-3 |
| ITF Women Tokyo | 2017/11/09 01:30 | Dalma Galfi v Shiho Akita | 6-4,7-5 |
| ITF Women Tokyo | 2017/11/07 01:00 | Na Ri Kim v Shiho Akita | 6-7,2-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Mana Ayukawa v Mei Yamaguchi | 4-6,2-6 |
| ITF Women Yokohama Qual | 2018/03/06 01:00 | Mai Hontama v Mei Yamaguchi | 6-2,7-6 |
| ITF Women Yokohama Qual | 2018/03/04 07:00 | Mei Yamaguchi v Chihiro Muramatsu | 6-4,6-4 |
| ITF Women Tokyo | 2017/11/09 03:15 | Mei Yamaguchi v Su Jeong Jang | 5-7,4-6 |
| ITF Women Tokyo | 2017/11/07 04:00 | Mei Yamaguchi v Himari Sato | 6-2,6-3 |
| ITF Women Tokyo Qual | 2017/11/06 01:00 | Mei Yamaguchi v Moyuka Uchijima | 6-2,7-6 |
| ITF Women Tokyo Qual | 2017/11/05 01:00 | Akari Inoue v Mei Yamaguchi | 6-4,1-6,4-6 |
| ITF Women Tokyo Qual | 2017/11/04 02:45 | Yukina Saigo v Mei Yamaguchi | 2-6,7-6,3-6 |