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