Stadium: Court 4 Round: 27
| ITF Women Singapore | 2018/06/13 02:00 | Minokoshi, Mai v Choi, Ji-Hee | 2-6,3-6 |
| ITF Women Singapore | 2018/06/12 02:00 | Choi, Ji-Hee v Nur Haliza, Deria | 3-6,6-1,6-3 |
| ITF Women Singapore Qual | 2018/06/10 04:10 | Choi, Ji-Hee v Riya Bhatia | 6-4,7-5 |
| ITF Women Singapore Qual | 2018/06/09 03:30 | Choi, Ji-Hee v Ksenia Kuznetsova | 6-4,7-6 |
| ITF Women Singapore | 2018/06/04 06:20 | Choi, Ji-Hee v Inoue, Miyabi | 2-6,4-6 |
| ITF Women Singapore Qual | 2018/06/03 02:00 | Choi, Ji-Hee v Ksenia Kuznetsova | 6-3,6-2 |
| ITF Women Changwon | 2018/05/25 01:00 | Jeong, Sunam v Choi, Ji-Hee | 6-3,6-2 |
| ITF Women Changwon | 2018/05/24 01:00 | Eunhye Lee v Choi, Ji-Hee | 1-6,2-6 |
| ITF Women Singapore | 2018/06/13 04:05 | Heise, Priscilla v Ozaki, Risa | 1-6,2-6 |
| ITF Women Singapore | 2018/06/11 02:00 | Mihalikova, Tereza v Ozaki, Risa | 3-6,6-7 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/06/07 02:30 | Karman Kaur Thandi v Ozaki, Risa | 3-6,6-2,6-4 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/06/06 02:30 | Monica Robinson v Ozaki, Risa | 1-6,1-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/30 02:30 | Ozaki, Risa v Sawasdee, Watsachol | 3-6,4-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/29 04:55 | Ozaki, Risa v Luangnam, Nudnida | 7-5,6-3 |
| ITF Women Changwon | 2018/05/25 03:15 | Ozaki, Risa v Flink, Varvara | 6-7,0-6 |
| ITF Women Changwon | 2018/05/24 03:20 | Ozaki, Risa v Gilchrist, Nadja | 7-5,6-3 |