Stadium: Court 4 Round: 62 Ground: Synthetic outdoor
| ITF Women Kurume Qual | 2018/05/14 02:30 | Ari Matsumoto v Chihiro Takayama | 1-6,6-3,6-2 |
| ITF Women Anning | 2018/09/18 04:05 | Sowjanya Bavisetti v Chihiro Takayama | 6-1,6-3 |
| ITF Women Kyoto | 2018/09/04 09:25 | Chihiro Takayama v Chie Kezuka | 5-7,7-6,3-6 |
| ITF Women Nanao | 2018/08/26 08:30 | Yidi Yang v Chihiro Takayama | 6-1,6-3 |
| ITF Women Gimcheon | 2018/08/22 01:00 | Chihiro Takayama v Hwiwon Wi | 4-6,0-6 |
| ITF Women Gimcheon | 2018/08/21 01:00 | Chihiro Takayama v Ashmitha Easwaramurthi | 6-3,6-3 |
| ITF Women Gimcheon | 2018/08/20 02:00 | Nikita Uberoi v Chihiro Takayama | 3-6,3-6 |
| ITF Women Gimcheon | 2018/08/19 01:00 | Chihiro Takayama v Sandeul Kim | 6-3,6-2 |
| ITF Women Gimcheon | 2018/08/13 01:00 | SinHee Kim v Chihiro Takayama | 6-0,3-6,6-2 |
| ITF Women Makinohara | 2018/10/10 02:25 | Ari Matsumoto v Miharu Imanishi | 4-6,2-6 |
| ITF Women Makinohara | 2018/10/08 02:45 | Ari Matsumoto v Sakura Hosogi | 7-5,6-1 |
| 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 |