Stadium: COURT F Round: 54 Ground: Synthetic outdoor
| ITF Women Makinohara | 2018/10/07 03:00 | Ari Matsumoto v Yui Chikaraishi | 6-3,6-3 |
| ITF Women Kofu | 2018/06/13 02:45 | Ari Matsumoto v Kai-Chen Chang | 2-6,6-7 |
| ITF Women Karuizawa | 2018/05/24 02:40 | Miyabi Inoue v Ari Matsumoto | 6-4,6-2 |
| ITF Women Karuizawa | 2018/05/22 02:35 | Chisa Hosonuma v Ari Matsumoto | 5-7,2-6 |
| ITF Women Karuizawa Qual | 2018/05/21 01:00 | Alexandra Riley v Ari Matsumoto | 0-6,4-6 |
| ITF Women Kurume | 2018/05/16 01:00 | Rika Fujiwara v Ari Matsumoto | 3-6,6-3,6-4 |
| ITF Women Kurume Qual | 2018/05/15 01:00 | Yuki Kristina Chiang v Ari Matsumoto | 0-6,0-6 |
| ITF Women Kurume Qual | 2018/05/14 02:30 | Ari Matsumoto v Chihiro Takayama | 1-6,6-3,6-2 |
| ITF Women Makinohara | 2018/10/07 03:00 | Mana Kawamura v Sakura Hosogi | 6-1,4-6,4-6 |
| ITF Women Kyoto | 2018/09/04 09:55 | Megumi Nishimoto v Sakura Hosogi | 3-6,6-3,6-2 |
| ITF Women Nanao | 2018/08/27 01:00 | Megumi Nishimoto v Sakura Hosogi | 6-2,6-2 |
| ITF Women Gimcheon | 2018/08/24 01:10 | Hanna Chang v Sakura Hosogi | 6-2,6-1 |
| ITF Women Gimcheon | 2018/08/23 05:00 | Hwiwon Wi v Sakura Hosogi | 2-6,5-7 |
| ITF Women Gimcheon | 2018/08/22 01:00 | Sakura Hosogi v Joanna Garland | 6-3,6-2 |
| ITF Women Gimcheon | 2018/08/21 01:00 | Sakura Hosogi v Ya Yun Pai | 6-4,6-4 |
| ITF Women Gimcheon | 2018/08/20 01:00 | Sakura Hosogi v Seon Young Um | 6-2,6-4 |