Stadion: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF Damen - Karuizawa | 2018/05/24 02:40 | Miyabi Inoue v Ari Matsumoto | 6-4,6-2 |
| ITF Damen - Karuizawa | 2018/05/22 02:35 | Chisa Hosonuma v Ari Matsumoto | 5-7,2-6 |
| ITF Damen - Karuizawa - Qualifikation | 2018/05/21 01:00 | Alexandra Riley v Ari Matsumoto | 0-6,4-6 |
| ITF Damen - Kurume | 2018/05/16 01:00 | Rika Fujiwara v Ari Matsumoto | 3-6,6-3,6-4 |
| ITF Damen - Kurume - Qualifikation | 2018/05/15 01:00 | Yuki Kristina Chiang v Ari Matsumoto | 0-6,0-6 |
| ITF Damen - Kurume - Qualifikation | 2018/05/14 02:30 | Ari Matsumoto v Chihiro Takayama | 1-6,6-3,6-2 |
| ITF Damen - Kurume - Qualifikation | 2018/05/13 08:25 | Ari Matsumoto v Nao Itoyama | 6-0,6-0 |
| ITF Damen - Osaka - Qualifikation | 2018/04/08 03:30 | Ari Matsumoto v Ramu Ueda | 3-6,6-7 |
| ITF Damen - Changwon | 2018/05/23 01:00 | Kai-Chen Chang v Alina Silich | 4-6,6-7 |
| ITF Damen - Incheon | 2018/05/16 03:10 | Ching-Wen Hsu v Kai-Chen Chang | 6-0,6-3 |
| ITF Damen - Goyang | 2018/05/08 03:05 | Ji-Hee Choi v Kai-Chen Chang | 6-4,6-4 |
| ITF Damen - Kashiwa - Qualifikation | 2018/04/01 03:30 | Kai-Chen Chang v Makoto Ninomiya | 6-1,6-7,7-6 |
| ITF Damen - Kofu | 2018/03/27 04:20 | Giulia Gatto Monticone v Kai-Chen Chang | 6-2,6-3 |
| ITF Damen - Toyota | 2018/03/14 05:40 | Kai-Chen Chang v Ayla Aksu | 3-6,2-6 |
| ITF Damen - Yokohama | 2018/03/07 05:30 | Eri Hozumi v Kai-Chen Chang | 7-6,5-7,6-4 |
| WTA - Taipei | 2018/01/31 07:55 | Yulia Putintseva v Kai-Chen Chang | 6-3,7-6 |