Stadium: Court C Round: 62 Ground: Hardcourt outdoor
| 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 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 Nishi-Tama | 2018/03/17 01:00 | Ai Kamiyoshihara v Satoko Sueno | 2-6,0-6 |
| ITF Women Yokohama | 2018/03/06 04:15 | Marina Kurosu v Satoko Sueno | 6-3,6-4 |
| ITF Women Kyoto | 2017/09/04 01:00 | Mayuka Aikawa v Satoko Sueno | 6-3,6-4 |
| ITF Women Kyoto | 2017/09/02 06:00 | Jiahuan He v Satoko Sueno | 0-6,1-6 |
| ITF Women Nanao Qual | 2017/08/27 04:00 | Ayumi Miyamoto v Satoko Sueno | 6-1,6-1 |