Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| Hua Hin, Singles W-WITF-THA-07A | 2018/11/26 04:35 | Niyomsub, Sirinat v Momkoonthod, Tamachan | 1-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/11 02:00 | Niyomsub, Sirinat v Misaki Matsuda | 1-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/10/28 05:30 | Jirasook, Keira v Niyomsub, Sirinat | 4-6,6-2,6-3 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/10/27 05:30 | Niyomsub, Sirinat v Boonlaing, Guntisa | 6-1,6-1 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/09/01 06:00 | Niyomsub, Sirinat v Lee, Warisara | 0-6,3-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/11 05:00 | Zeel Desai v Niyomsub, Sirinat | 6-0,6-2 |
| ITF Women Nonthaburi Qual | 2018/07/14 02:00 | Niyomsub, Sirinat v Claudia Hoste Ferrer | 0-6,1-6 |
| ITF Women Nonthaburi Qual | 2018/07/07 02:00 | Hsu, Ching Wen v Niyomsub, Sirinat | 6-2,6-0 |
| ITF Women Guiyang | 2018/08/14 02:00 | Kang, Jia-Qi v Yexin Ma | 6-7,6-4,7-6 |
| ITF Women Jinan | 2018/08/08 02:00 | Jing-Jing Lu v Yexin Ma | 6-1,6-1 |
| ITF Women Jinan | 2018/08/07 02:00 | Yexin Ma v Lulu Sun | 6-4,6-1 |
| ITF Women Jinan | 2018/08/06 04:30 | Yexin Ma v Sheng, Yuqi | 7-5,6-7,6-3 |
| ITF Women Jinan | 2018/08/05 10:30 | Yexin Ma v Lu, Jiaxi | 6-3,2-6,6-4 |
| ITF Women Jakarta | 2018/07/19 03:00 | Yexin Ma v Arianne Hartono | 6-7,3-6 |
| ITF Women Jakarta | 2018/07/17 03:00 | Yexin Ma v Mu, Shou Na | 6-1,7-5 |
| ITF Women Solo | 2018/07/12 05:20 | Yexin Ma v Jain, Mahak | 3-6,1-6 |