Stadium: Centre Court Round: 28 Ground: Hardcourt outdoor
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/10 02:30 | Thamchaiwat, B. v Aldila Sutjiadi | 6-4,6-3 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/09 04:15 | Thamchaiwat, B. v Ho Ching Wu | 6-1,6-3 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/08 04:20 | Thamchaiwat, B. v Zhibek Kulambayeva | 6-3,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/05 03:00 | Thamchaiwat, B. v Luangnam, Nudnida | 6-1,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/04 03:30 | Thamchaiwat, B. v Ma, Shuyue | 6-1,6-2 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/03 02:30 | Thamchaiwat, B. v Ying Zhang | 6-0,6-3 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/02 02:30 | Thamchaiwat, B. v Chanta, Aunchisa | 6-1,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/04/30 06:40 | Thamchaiwat, B. v Hondo, Sakura | 3-6,7-6,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/10 02:30 | Guillermo, Lorraine M v Momkoonthod, Tamachan | 6-4,6-3 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/09 04:20 | Guillermo, Lorraine M v Sheng, Yuqi | 6-3,6-2 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/07 08:10 | Guillermo, Lorraine M v Walters, Alexandra | 6-1,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/02 02:30 | Guillermo, Lorraine M v Ma, Shuyue | 6-7,2-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/01 02:30 | Guillermo, Lorraine M v Amy Zhu | 6-3,6-3 |
| ITF Women Dothan Qual | 2018/04/15 18:00 | Guillermo, Lorraine M v Gleason, Quinn | 6-3,6-7,2-6 |
| ITF Women Pelham | 2018/04/10 17:15 | Guillermo, Lorraine M v Hendler, Tamaryn | 5-7,4-6 |
| ITF Women Rancho Santa Fe | 2018/02/22 20:40 | Guillermo, Lorraine M v Ann Li | 6-7,3-6 |