Stadium: Court 12 Round: 27 Ground: Synthetic outdoor
| ITF Women Karuizawa | 2018/05/24 06:15 | Ayano Shimizu v Mei Yamaguchi | 4-6,6-1,4-6 |
| ITF Women Karuizawa | 2018/05/24 01:15 | Mei Yamaguchi v Risa Ushijima | 3-6,7-5,7-6 |
| ITF Women Kurume Qual | 2018/05/13 09:50 | Mei Yamaguchi v Kotomi Takahata | 6-3,3-6,4-6 |
| ITF Women Fukuoka | 2018/05/09 04:20 | Mei Yamaguchi v Arina Rodionova | 0-6,5-7 |
| ITF Women Gifu | 2018/05/01 01:00 | Mei Yamaguchi v Momoko Kobori | 6-4,3-6,3-6 |
| ITF Women Gifu Qual | 2018/04/30 03:00 | Makoto Ninomiya v Mei Yamaguchi | 6-4,4-6,4-6 |
| ITF Women Gifu Qual | 2018/04/29 04:20 | Mei Yamaguchi v Yuki Kristina Chiang | 6-1,6-2 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Ya-Hsuan Lee v Mei Yamaguchi | 3-6,6-1,6-4 |
| ITF Women Karuizawa | 2018/05/24 03:55 | Ayaka Okuno v Abbie Myers | 2-6,3-6 |
| ITF Women Karuizawa | 2018/05/23 01:00 | Rina Saigo v Abbie Myers | 6-7,3-6 |
| ITF Women Kurume | 2018/05/20 01:00 | Abbie Myers v Ayano Shimizu | 3-6,5-7 |
| ITF Women Kurume | 2018/05/19 01:00 | Naomi Broady v Abbie Myers | 5-7,3-6 |
| ITF Women Kurume | 2018/05/18 04:45 | Tammi Patterson v Abbie Myers | 3-6,6-2,4-6 |
| ITF Women Kurume | 2018/05/17 01:00 | Abbie Myers v Asia Muhammad | 6-3,6-1 |
| ITF Women Kurume | 2018/05/16 02:35 | Abbie Myers v Anastasia E Nefedova | 5-7,7-6,7-6 |
| ITF Women Kurume Qual | 2018/05/15 01:00 | Abbie Myers v Aiko Yoshitomi | 6-1,7-6 |