Stadium: Court A Round: 25 Ground: Hardcourt outdoor
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/06 02:30 | Thamchaiwat, B. v Destanee Aiava | 1-6,6-3,6-0 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/06 02:30 | Thamchaiwat, B. v Destanee Aiava | 1-6,6-3,6-0 |
| ITF Women Surbiton | 2018/06/05 16:10 | Fanny Stollar v Destanee Aiava | 6-2,6-7,7-5 |
| French Open Women Qual | 2018/05/23 08:00 | Destanee Aiava v Fangzhou Liu | 6-2,3-6,3-6 |
| ITF Women Osaka | 2018/04/15 02:00 | Rebecca Marino v Destanee Aiava | 3-6,6-7 |
| 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 | Destanee Aiava v Xinyu Wang | 7-6,6-2 |
| ITF Women Osaka | 2018/04/12 03:20 | Destanee Aiava v En Shuo Liang | 6-3,7-6 |
| ITF Women Osaka | 2018/04/10 01:00 | Destanee Aiava v Minokoshi, Mai | 1-6,6-4,7-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/08 03:30 | Stefkova, Barbora v Thamchaiwat, B. | 6-3,6-3 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/06 02:30 | Thamchaiwat, B. v Destanee Aiava | 1-6,6-3,6-0 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/07/16 03:50 | Thamchaiwat, B. v Rutuja Bhosale | 2-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/07/11 02:00 | Thamchaiwat, B. v Peangtarn Plipuech | 1-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/07/09 04:55 | Thamchaiwat, B. v Choi, Ji-Hee | 6-0,6-2 |
| ITF Women Singapore | 2018/06/12 05:35 | Glushko, Julia v Thamchaiwat, B. | 6-1,6-2 |
| ITF Women Singapore | 2018/06/04 03:55 | Thamchaiwat, B. v Eguchi, Misa | 1-6,0-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/11 02:30 | Thamchaiwat, B. v Guillermo, Lorraine M | 7-6,6-3 |