Stadium: Court A5 Round: 25 Ground: Synthetic outdoor
| ITF Women Tsukuba | 2018/08/21 03:00 | Kai-Lin Zhang v Kumi So | 6-2,7-5 |
| ITF Women Sharm El Sheikh | 2018/01/24 08:00 | Kai-Lin Zhang v Kumi So | 6-4,2-6,7-5 |
| ITF Women Tsukuba | 2018/08/26 02:00 | Kai-Lin Zhang v Xiyu Wang | 6-3,5-7,5-7 |
| ITF Women Tsukuba | 2018/08/25 01:00 | Kai-Lin Zhang v Nagi Hanatani | 6-4,7-5 |
| ITF Women Tsukuba | 2018/08/24 01:00 | Kai-Lin Zhang v Erika Sema | 6-2,6-3 |
| ITF Women Tsukuba | 2018/08/21 03:00 | Kai-Lin Zhang v Kumi So | 6-2,7-5 |
| ITF Women Guiyang | 2018/08/17 05:20 | Jovana Jaksic v Kai-Lin Zhang | 6-1,6-2 |
| ITF Women Guiyang | 2018/08/15 04:50 | Ying Zhang v Kai-Lin Zhang | 4-6,2-6 |
| ITF Women Guiyang | 2018/08/14 02:00 | Ziyue Sun v Kai-Lin Zhang | 1-6,1-6 |
| ITF Women Jinan | 2018/08/09 09:15 | Kai-Lin Zhang v Yafan Wang | 6-7,1-6 |
| ITF Women Nanao | 2018/08/27 04:45 | Mayuka Aikawa v Kumi So | 2-6,4-6 |
| ITF Women Nanao | 2018/08/26 04:30 | Ikumi Yamazaki v Kumi So | 1-6,1-6 |
| ITF Women Tsukuba | 2018/08/21 03:00 | Kai-Lin Zhang v Kumi So | 6-2,7-5 |
| ITF Women Tsukuba | 2018/08/20 01:00 | Rina Saigo v Kumi So | 3-6,1-6 |
| ITF Women Tsukuba | 2018/08/19 03:00 | Kumi So v Kotomi Takahata | 6-4,6-4 |
| ITF Women Figueira Da Foz Qual | 2018/07/16 12:00 | Cristina Bucsa v Kumi So | 6-1,6-0 |
| ITF Women Setubal Qual | 2018/07/08 13:00 | Kelly Williford v Kumi So | 2-6,6-7 |
| ITF Women Corroios-Seixal | 2018/07/05 11:00 | Eden Silva v Kumi So | 6-2,6-3 |