Stadium: Court 4 Round: 54
| ITF Women Kurume Qual | 2018/05/13 08:25 | Ari Matsumoto v Nao Itoyama | 6-0,6-0 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Ari Matsumoto v Ramu Ueda | 3-6,6-7 |
| ITF Women Kashiwa | 2018/04/03 03:10 | Yuxuan Zhang v Ari Matsumoto | 6-3,6-4 |
| ITF Women Kofu | 2018/03/28 03:15 | Bianca Andreescu v Ari Matsumoto | 6-0,6-1 |
| ITF Women Antalya | 2018/03/08 07:30 | Agnes Bukta v Ari Matsumoto | 6-3,6-1 |
| ITF Women Antalya | 2018/03/07 09:50 | Vitalia Stamat v Ari Matsumoto | 6-4,4-6,4-6 |
| ITF Women Antalya | 2018/03/05 07:00 | Aleksandra Stankovic v Ari Matsumoto | 2-6,7-6,4-6 |
| ITF Women Antalya | 2018/03/04 08:30 | Ari Matsumoto v Elena Di Battista | 6-2,6-1 |
| ITF Women Kurume Qual | 2018/05/13 09:35 | Chihiro Takayama v Tori Kinard | 2-6,7-5,6-3 |
| ITF Women Fukuoka Qual | 2018/05/06 02:20 | Aiko Yoshitomi v Chihiro Takayama | 6-2,6-3 |
| ITF Women Osaka Qual | 2018/04/07 05:30 | Chihiro Takayama v Ayumi Miyamoto | 2-6,4-6 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ksenia Lykina v Chihiro Takayama | 7-6,6-3 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | So-Ra Lee v Chihiro Takayama | 6-3,7-5 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Utaka Kishigami v Chihiro Takayama | 2-6,4-6 |
| ITF Women Nishi-Tama | 2018/03/17 01:00 | Suzuka Furukawa v Chihiro Takayama | 4-6,2-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Chihiro Takayama v Misa Eguchi | 1-6,4-6 |