Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF Women Nishi-Tama | 2018/03/20 06:45 | Mei Yamaguchi v Yuuki Tanaka | 6-4,3-6,1-6 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Mei Yamaguchi v Momoka Chimura | 6-4,6-1 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Mei Yamaguchi v Satoko Sueno | 6-1,6-2 |
| ITF Women Nishi-Tama | 2018/03/17 01:00 | Mei Yamaguchi v Natsumi Koshino | 6-2,6-0 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Shiho Akita v Mei Yamaguchi | 6-3,6-1 |
| 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 Toyota Qual | 2018/03/10 01:00 | Rika Fujiwara v Suzuho Oshino | 7-5,6-0 |
| ITF Women Yokohama Qual | 2018/03/04 06:00 | Shiho Akita v Suzuho Oshino | 6-4,7-5 |
| ITF Women Tokyo Qual | 2017/11/04 01:00 | Sunam Jeong v Suzuho Oshino | 6-2,6-2 |
| ITF Women Hamamatsu | 2017/10/18 04:10 | Chihiro Muramatsu v Suzuho Oshino | 6-0,6-0 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Suzuho Oshino v Rion Itaya | 6-4,6-7,7-5 |
| ITF Women Hamamatsu Qual | 2017/10/16 02:00 | Suzuho Oshino v Mayuka Aikawa | 6-4,6-7,6-4 |
| ITF Women Hamamatsu Qual | 2017/10/14 00:00 | Suzuho Oshino v Nagisa Suzuki | 6-0,6-3 |
| ITF Women Makinohara | 2017/10/11 03:40 | Ayano Shimizu v Suzuho Oshino | 6-1,6-0 |