Stadium: Court 1 Round: 27
| ITF Women Gyeongsan | 2018/06/14 04:50 | Eunhye Lee v Koike, Satsuki | 4-6,2-6 |
| ITF Women Gyeongsan | 2018/06/13 03:40 | Bizhukova, Fatima v Koike, Satsuki | 2-6,6-2,1-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 04:50 | Yoon, Sujin v Koike, Satsuki | 4-6,2-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Koike, Satsuki v Miyahara, Mihoki | 6-2,6-2 |
| ITF Women Gyeongsan Qual | 2018/06/10 03:30 | Koike, Satsuki v Lee, Jeongyun | 7-6,6-1 |
| ITF Women Sangju Qual | 2018/06/03 02:00 | Eri Shimizu v Koike, Satsuki | 2-6,7-5,6-3 |
| ITF Women Fukuoka Qual | 2018/05/06 01:00 | Nagi Hanatani v Koike, Satsuki | 6-1,6-4 |
| ITF Women Gifu Qual | 2018/04/29 04:20 | Hiroko Kuwata v Koike, Satsuki | 6-4,6-1 |
| ITF Women Gyeongsan | 2018/06/14 01:00 | Zhibek Kulambayeva v Okuno, Ayaka | 7-5,2-6,6-1 |
| ITF Women Gyeongsan | 2018/06/12 06:20 | Zhibek Kulambayeva v Jun, Da Bin | 6-1,6-2 |
| Changwon, Singles Qualifying W-WITF-KOR-01A | 2018/05/20 03:00 | Kim, Sumin v Zhibek Kulambayeva | 1-6,6-3,6-3 |
| ITF Women Incheon Qual | 2018/05/14 02:00 | Zhibek Kulambayeva v Yu, Min-Hwa | 4-6,1-6 |
| ITF Women Incheon Qual | 2018/05/13 01:00 | Zhibek Kulambayeva v Hong, Seung-Yeon | 6-3,6-4 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/08 04:20 | Thamchaiwat, B. v Zhibek Kulambayeva | 6-3,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/02 04:30 | Zhibek Kulambayeva v Aldila Sutjiadi | 1-6,2-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/01 02:30 | Zhibek Kulambayeva v Walters, Alexandra | 6-3,6-3 |