Stadium: Indoor 1 Round: 25
| ITF Women Osaka | 2018/04/14 01:00 | Na-Lae Han v Destanee Aiava | 2-6,6-1,4-6 |
| ITF Women Osaka | 2018/04/13 01:00 | Na-Lae Han v Ksenia Lykina | 6-2,4-6,6-1 |
| ITF Women Osaka | 2018/04/12 01:00 | Ankita Raina v Na-Lae Han | 6-3,0-6,2-6 |
| ITF Women Osaka | 2018/04/10 01:00 | Ramu Ueda v Na-Lae Han | 6-7,1-6 |
| ITF Women Kashiwa | 2018/04/05 01:00 | Na-Lae Han v Mayo Hibi | 2-6,4-6 |
| ITF Women Kashiwa | 2018/04/03 02:35 | Na-Lae Han v Momoko Kobori | 6-3,6-0 |
| ITF Women Nishi-Tama | 2018/03/20 01:00 | Na-Lae Han v Yuki Kristina Chiang | 3-6,4-6 |
| ITF Women Toyota | 2018/03/14 05:00 | Na-Lae Han v Bianca Andreescu | 3-6,3-6 |
| ITF Women Osaka Qual | 2018/04/07 01:30 | Ayumi Koshiishi v Akiko Omae | 3-6,2-6 |
| ITF Women Kofu Qual | 2018/03/25 01:00 | Ksenia Lykina v Ayumi Koshiishi | 7-5,6-7,6-3 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ayumi Koshiishi v Haruna Arakawa | 7-5,6-4 |
| ITF Women Nishi-Tama | 2018/03/17 04:00 | Kei Kato v Ayumi Koshiishi | 7-5,6-4 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Ji-Hee Choi v Ayumi Koshiishi | 4-6,6-3,6-2 |
| ITF Women Hong Kong | 2018/01/01 03:35 | Risa Ushijima v Ayumi Koshiishi | 6-1,3-6,7-5 |
| ITF Women Hong Kong | 2017/12/31 02:00 | Ayumi Koshiishi v Pinyi Zuo | 6-1,6-0 |
| ITF Women Hong Kong | 2017/12/30 05:30 | Ayumi Koshiishi v Ashmitha Easwaramurthi | 6-0,6-2 |