Stadium: Court 8 Round: 44
| ITF Women Sangju Qual | 2018/06/04 03:30 | Takayama, Chihiro v Yea, Hyojung | 2-6,1-6 |
| ITF Women Daegu Qual | 2018/06/17 01:00 | Yea, Hyojung v Lee, Jeongyun | 6-2,6-1 |
| ITF Women Gyeongsan | 2018/06/15 01:00 | Hanna Chang v Yea, Hyojung | 6-2,6-2 |
| ITF Women Gyeongsan | 2018/06/14 05:50 | Kim, SE-Hyun v Yea, Hyojung | 4-6,0-6 |
| ITF Women Gyeongsan | 2018/06/13 05:15 | Yea, Hyojung v Han, Sung-Hee | 6-4,6-2 |
| ITF Women Gyeongsan Qual | 2018/06/12 02:25 | Yea, Hyojung v Kim, Cherry | 6-1,6-4 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Sheng, Yuqi v Yea, Hyojung | 2-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/10 01:00 | Yea, Hyojung v Subin Park | 6-2,6-1 |
| ITF Women Sangju | 2018/06/06 01:00 | Okuno, Ayaka v Yea, Hyojung | 6-3,6-3 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Takayama, Chihiro v Song, Ah | 2-6,4-6 |
| ITF Women Sangju Qual | 2018/06/04 03:30 | Takayama, Chihiro v Yea, Hyojung | 2-6,1-6 |
| ITF Women Karuizawa Qual | 2018/05/21 02:55 | Yukina Saigo v Takayama, Chihiro | 6-1,6-1 |
| ITF Women Kurume Qual | 2018/05/14 02:30 | Matsumoto, Ari v Takayama, Chihiro | 1-6,6-3,6-2 |
| ITF Women Kurume Qual | 2018/05/13 09:35 | Takayama, Chihiro v Kinard, Tori | 2-6,7-5,6-3 |
| ITF Women Fukuoka Qual | 2018/05/06 02:20 | Yoshitomi, Aiko v Takayama, Chihiro | 6-2,6-3 |
| ITF Women Osaka Qual | 2018/04/07 05:30 | Takayama, Chihiro v Miyamoto, Ayumi | 2-6,4-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 00:30 | Lykina, Ksenia v Takayama, Chihiro | 7-6,6-3 |