Round: 26 Ground: Synthetic outdoor
| ITF Women Karuizawa | 2018/05/22 01:00 | Chihiro Muramatsu v Shiho Akita | 6-2,6-4 |
| ITF Women Kurume | 2018/05/15 05:05 | Ivana Jorovic v Chihiro Muramatsu | 6-3,6-3 |
| ITF Women Fukuoka | 2018/05/08 04:05 | Abigail Tere-Apisah v Chihiro Muramatsu | 6-3,6-2 |
| ITF Women Gifu | 2018/05/03 03:50 | Nao Hibino v Chihiro Muramatsu | 6-3,7-6 |
| ITF Women Gifu | 2018/05/01 01:00 | Chihiro Muramatsu v Erika Sema | 7-5,3-6,7-6 |
| ITF Women Osaka Qual | 2018/04/09 01:00 | Chihiro Muramatsu v Rebecca Marino | 4-6,3-6 |
| ITF Women Osaka Qual | 2018/04/08 02:00 | Chihiro Muramatsu v Suzuho Oshino | 6-1,6-1 |
| ITF Women Osaka Qual | 2018/04/07 01:30 | Chihiro Muramatsu v Megumi Nishimoto | 6-1,6-1 |
| ITF Women Karuizawa | 2018/05/22 03:05 | Kanako Morisaki v Yukina Saigo | 4-6,6-3,6-2 |
| ITF Women Karuizawa Qual | 2018/05/21 01:30 | Kanako Morisaki v Mana Kawamura | 5-7,6-4,6-3 |
| ITF Women Kurume | 2018/05/15 02:50 | Kanako Morisaki v Arina Rodionova | 0-6,4-6 |
| ITF Women Osaka Qual | 2018/04/07 04:00 | Kanako Morisaki v Mayuka Aikawa | 6-7,3-6 |
| ITF Women Nishi-Tama | 2018/03/22 04:25 | Na Ri Kim v Kanako Morisaki | 1-6,7-5,6-2 |
| ITF Women Nishi-Tama | 2018/03/20 04:50 | Haruna Arakawa v Kanako Morisaki | 5-7,2-6 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Kanako Morisaki v Akari Inoue | 6-1,6-2 |
| ITF Women Nishi-Tama | 2018/03/18 03:00 | Kanako Morisaki v Erika Matsuda | 6-1,6-4 |