Round: 54 Ground: Hardcourt outdoor
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Tumthong, Dolavee v Ren, Jia Qi | 1-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/06 04:30 | Tumthong, Dolavee v Ya-Hsuan Lee | 0-6,1-6 |
| ITF Women Nonthaburi Qual | 2018/07/14 02:00 | Tumthong, Dolavee v Mei Yamaguchi | 3-6,2-6 |
| ITF Women Nonthaburi Qual | 2018/07/07 02:00 | Claudia Hoste Ferrer v Tumthong, Dolavee | 6-3,6-3 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Tumthong, Dolavee v Ren, Jia Qi | 1-6,2-6 |
| ITF Women Hua Hin Qual | 2018/05/27 02:30 | Luangnam, Nudnida v Tumthong, Dolavee | 6-1,6-2 |
| ITF Women Hua Hin Qual | 2018/05/26 02:30 | Correa, Mariana v Tumthong, Dolavee | 3-6,6-2,3-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/08 03:30 | Tumthong, Dolavee v Yi Tsen Cho | 0-6,1-6 |
| ITF Women Hua Hin Qual | 2018/05/07 02:30 | Tumthong, Dolavee v Kong, Qianxin | 7-5,6-4 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/04 06:10 | Ren, Jia Qi v Ayumi Koshiishi | 1-6,6-1,2-6 |
| ITF Women Nonthaburi Qual | 2018/07/14 05:35 | Patcharin Cheapchandej v Ren, Jia Qi | 6-2,6-1 |
| ITF Women Tianjin Qual | 2018/07/08 02:00 | Cai, Xinyu v Ren, Jia Qi | 6-3,7-5 |
| ITF Women Madrid Qual | 2018/06/18 10:15 | Pribylova, Anastasia v Ren, Jia Qi | 6-0,6-1 |
| ITF Women Hua Hin Qual | 2018/06/04 05:05 | Kajuru, Ange Oby v Ren, Jia Qi | 6-1,6-2 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Tumthong, Dolavee v Ren, Jia Qi | 1-6,2-6 |
| WTA Anning Qual | 2018/04/28 05:55 | Ren, Jia Qi v Kukharchuk, Nika | 0-6,4-6 |
| Quanzhou, Singles W-WITF-CHN-07A | 2018/04/24 02:00 | Cako, Jacqueline v Ren, Jia Qi | 6-1,6-1 |