Stadium: Court 11 Round: 54 Ground: Hardcourt outdoor
| ITF Women Yeongwol | 2018/09/05 01:00 | Lee, Jeongyun v Hwiwon Wi | 5-7,5-7 |
| ITF Women Yeongwol | 2018/08/29 03:35 | Yuka Hosoki v Lee, Jeongyun | 2-6,6-7 |
| ITF Women Gimcheon | 2018/08/21 01:00 | Oh, Soo Bin v Lee, Jeongyun | 6-4,6-3 |
| ITF Women Gimcheon | 2018/08/20 01:00 | Lee, Jeongyun v Park, Seo Yeon | 6-2,6-2 |
| ITF Women Daegu Qual | 2018/06/17 01:00 | Yea, Hyojung v Lee, Jeongyun | 6-2,6-1 |
| ITF Women Gyeongsan Qual | 2018/06/10 03:30 | Koike, Satsuki v Lee, Jeongyun | 7-6,6-1 |
| ITF Women Goyang Qual | 2018/05/07 00:30 | Kwon, Mi Jeong v Lee, Jeongyun | 4-6,0-6 |
| ITF Women Yeongwol | 2017/09/07 02:25 | Lee, So-Ra v Lee, Jeongyun | 6-3,6-4 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/20 01:00 | Yoshida, Asuka v Oshino, Suzuho | 6-0,0-6,10-3 |
| Osaka, Singles W-ITF-JPN-02A | 2019/04/08 01:00 | Oshino, Suzuho v Yudanov, Marina | 2-6,4-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/10 04:15 | Oshino, Suzuho v Erina Hayashi | 1-6,3-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/08 03:25 | Takahata, Kotomi v Oshino, Suzuho | 4-6,2-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/07 03:00 | Haine Ogata v Oshino, Suzuho | 6-1,3-6,2-6 |
| ITF Women Jakarta | 2018/07/19 03:00 | Oshino, Suzuho v Okuno, Ayaka | 3-6,4-6 |
| ITF Women Jakarta | 2018/07/18 03:00 | Takayama, Chihiro v Oshino, Suzuho | 7-6,3-6,2-6 |
| ITF Women Solo | 2018/07/11 02:30 | Oshino, Suzuho v Okuno, Ayaka | 6-7,4-6 |