Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF Women Jakarta | 2018/07/15 05:30 | Charmaine S Y Seah v Yu-Ting Hsieh | 6-3,6-1 |
| ITF Women Jakarta | 2018/07/14 03:00 | Charmaine S Y Seah v Hsin-Yuan Shih | 6-1,6-4 |
| ITF Women Solo | 2018/07/08 03:30 | Charmaine S Y Seah v Anastasia Shaulskaya | 4-6,6-3,3-6 |
| ITF Women Singapore | 2018/06/11 02:00 | Charmaine S Y Seah v Priscilla Heise | 1-6,6-7 |
| ITF Women Singapore | 2018/06/04 02:00 | Charmaine S Y Seah v Victoria Muntean | 2-6,2-6 |
| ITF Women Incheon | 2018/05/15 03:00 | Na Ri Kim v Charmaine S Y Seah | 6-2,6-3 |
| 2018 Fed Cup | 2018/02/10 07:00 | Charmaine S Y Seah v Steffi Carruthers | 6-4,6-4 |
| Billie Jean King Cup | 2018/02/08 07:00 | Anna Clarice Patrimonio v Charmaine S Y Seah | 3-6,7-6,1-6 |
| ITF Women Solo | 2018/07/11 02:30 | Rifanty Kahfiani v Michika Ozeki | 6-2,6-4 |
| ITF Women Solo | 2018/07/10 06:00 | Suryaningsih Suryaningsih v Michika Ozeki | 1-6,1-6 |
| ITF Women Daegu | 2018/06/20 02:45 | Michika Ozeki v Kai-Chen Chang | 2-6,3-6 |
| ITF Women Kofu | 2018/06/14 04:20 | Lisa-Marie Rioux v Michika Ozeki | 7-5,7-5 |
| ITF Women Kofu | 2018/06/12 03:05 | Michika Ozeki v Misa Eguchi | 6-1,3-6,6-3 |
| ITF Women Singapore | 2018/06/05 02:00 | Jovana Jaksic v Michika Ozeki | 6-3,6-1 |
| ITF Women Singapore Qual | 2018/06/03 02:00 | Michika Ozeki v Yee Loon Goh | 6-2,6-1 |
| ITF Women Karuizawa | 2018/05/22 01:00 | Ayumi Miyamoto v Michika Ozeki | 6-1,6-1 |