Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF Women Nonthaburi Qual | 2018/07/07 03:45 | Patcharin Cheapchandej v Momkoonthod, Tamachan | 7-6,6-4 |
| ITF Women Hua Hin Qual | 2018/06/04 03:55 | Nina Stadler v Momkoonthod, Tamachan | 6-3,6-4 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Tanuchaporn Yongmod v Momkoonthod, Tamachan | 1-6,3-6 |
| ITF Women Hua Hin Qual | 2018/05/28 02:30 | Routliffe, Erin v Momkoonthod, Tamachan | 6-4,6-0 |
| ITF Women Hua Hin Qual | 2018/05/27 02:30 | Momkoonthod, Tamachan v Angelique Svinos | 7-6,6-2 |
| 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 | 2018/05/07 07:10 | Momkoonthod, Tamachan v Amy Zhu | 3-6,6-4,7-5 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/04/30 05:45 | Momkoonthod, Tamachan v Liu, Chang | 3-6,6-4,5-7 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/07/09 03:35 | Lee, Pei-Chei v Jandakate, Chompoothip | 5-7,6-4,1-6 |
| ITF Women Hong Kong | 2018/06/18 03:20 | Jia-Jing Lu v Lee, Pei-Chei | 6-4,6-3 |
| ITF Women Singapore | 2018/06/13 03:00 | Hiroko Kuwata v Lee, Pei-Chei | 6-1,6-4 |
| ITF Women Singapore | 2018/06/12 06:10 | Lee, Pei-Chei v Karman Kaur Thandi | 7-5,4-6,6-3 |
| ITF Women Singapore | 2018/06/07 03:00 | Eguchi, Misa v Lee, Pei-Chei | 6-4,6-3 |
| ITF Women Singapore | 2018/06/06 02:00 | Lee, Pei-Chei v Inoue, Miyabi | 6-1,4-6,6-3 |
| ITF Women Singapore | 2018/06/04 03:15 | Lee, Pei-Chei v Riya Bhatia | 6-2,6-3 |
| ITF Women Changwon | 2018/05/23 01:00 | Tanaka, Yuuki v Lee, Pei-Chei | 6-3,6-2 |