Stadium: Court A Round: 44
| ITF Thailand F1 | 2018/08/19 04:25 | Bang Shuo Yin v Kerdlaphee, Phongsapak | 6-7,3-6 |
| ITF Thailand F1 | 2018/08/18 02:50 | Kerdlaphee, Phongsapak v Klaoklang, Marut | 6-0,6-0 |
| ITF Malaysia F3 | 2018/07/15 07:00 | Kerdlaphee, Phongsapak v Choudhary, Ahmed | 3-6,1-6 |
| ITF Malaysia F2 | 2018/07/08 01:00 | Addison, Aaron v Kerdlaphee, Phongsapak | 6-4,6-3 |
| ITF Malaysia F1 Qual | 2018/07/01 04:00 | Kerdlaphee, Phongsapak v M Rifqi, Fitriadi | 6-4,4-6,1-6 |
| Sri Lanka F3, Singles Qualifying | 2018/06/26 04:45 | Kerdlaphee, Phongsapak v Bendre, Anvit | 1-6,4-6 |
| Sri Lanka F3, Singles Qualifying | 2018/06/25 07:00 | Sookton-Eng, Chanchai v Kerdlaphee, Phongsapak | 4-6,3-6 |
| ITF Sri Lanka F2 | 2018/06/18 10:30 | Kerdlaphee, Phongsapak v Sood, Chandril | 3-6,3-6 |
| ITF Thailand F1 | 2018/08/19 05:00 | Kumthonkittikul, W. v Nitayamekin, Gregory | 6-1,6-0 |
| ITF Thailand F1 | 2018/08/18 04:20 | Jityaem, Nitiwat v Kumthonkittikul, W. | 1-6,1-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Jeong Heon Lee v Kumthonkittikul, W. | 6-2,6-3 |
| ITF Korea F4 | 2018/08/11 01:00 | Kim, Sang Yeop v Kumthonkittikul, W. | 0-6,3-6 |
| ITF Indonesia F3 Qual | 2018/08/04 07:00 | Kumthonkittikul, W. v Siddharth Vishwakarma | 3-6,3-6 |
| ITF Guam F1 | 2018/06/17 00:00 | Hashikawa, Yasunori v Kumthonkittikul, W. | 1-6,5-7 |
| ITF Tunisia F21 | 2018/05/30 11:35 | Kirkov, Vasil v Kumthonkittikul, W. | 5-7,7-6,6-1 |
| ITF Tunisia F21 | 2018/05/27 09:00 | Sikman, Philip v Kumthonkittikul, W. | 2-6,2-6 |