Stadium: Court 5 Round: 44
| ITF Women Karuizawa Qual | 2018/05/21 02:55 | Yukina Saigo v Chihiro Takayama | 6-1,6-1 |
| ITF Women Kurume Qual | 2018/05/14 02:30 | Ari Matsumoto v Chihiro Takayama | 1-6,6-3,6-2 |
| 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 Sangju Qual | 2018/06/03 02:00 | Hyojung Yea v Eun Se Jang | 6-2,6-3 |
| ITF Women Changwon Qual | 2018/05/22 01:00 | Dabin Kim v Hyojung Yea | 2-6,6-4,6-3 |
| ITF Women Changwon Qual | 2018/05/21 01:00 | Hyojung Yea v Se-Hyun Kim | 6-1,1-6,6-0 |
| ITF Women Changwon Qual | 2018/05/20 01:00 | Eun Ji Lee v Hyojung Yea | 2-6,0-6 |
| ITF Women Incheon Qual | 2018/05/13 02:00 | Alina Silich v Hyojung Yea | 6-4,2-6,7-6 |
| ITF Women Goyang Qual | 2018/05/07 01:00 | Hyojung Yea v Alicia Barnett | 1-6,4-6 |
| ITF Women Goyang Qual | 2018/05/06 05:15 | Dami Lee v Hyojung Yea | 0-6,1-6 |
| ITF Women Yeongwol | 2017/09/05 01:00 | Hyojung Yea v Dabin Oh | 1-6,1-6 |