| Malaysia Masters | 2023/05/24 02:55 | Thammasin, S. v Magnus Johannesen | L | 1-2 |
| SEA Games | 2023/05/08 05:30 | Vannthoun Vath v Thammasin, S. | W | 0-2 |
| Orléans Masters | 2023/04/05 10:50 | Jan Louda v Thammasin, S. | L | 2-0 |
| Masters d'Espagne | 2023/03/29 10:20 | Srikanth Kidambi v Thammasin, S. | L | 2-1 |
| Open de Suisse | 2023/03/22 13:40 | Thammasin, S. v Koki Watanabe | L | 0-2 |
| Open d'Angleterre | 2023/03/15 10:00 | Thammasin, S. v Zii Jia Lee | L | 0-2 |
| Masters de Thaïlande | 2023/02/01 06:40 | Thammasin, S. v Anders Antonsen | L | 0-2 |
| Indonesia Masters | 2023/01/25 01:20 | Thammasin, S. v Lu, G. Z. | L | 1-2 |
| Open de Thaïlande - Qualif. | 2023/05/30 09:55 | Jun Hao Leong v Sholeh Aidil | W | 2-0 |
| Open de Thaïlande - Qualif. | 2023/05/30 07:20 | Jun Hao Leong v Meiraba Luwang Maisnam | W | 2-1 |
| Malaysia Masters 2020, MS, Qualification | 2023/05/23 02:00 | Yu Jen Chi v Jun Hao Leong | L | 2-1 |
| SEA Games | 2023/05/14 04:40 | Jewel Angelo Albo v Jun Hao Leong | W | 0-2 |
| SEA Games | 2023/05/13 05:30 | Jia Wei Joel Koh v Jun Hao Leong | W | 0-2 |
| SEA Games | 2023/05/11 07:00 | Chico Aura Dwi Wardoyo v Jun Hao Leong | W | 0-2 |
| SEA Games | 2023/05/09 03:00 | Hai Dang Nguyen v Jun Hao Leong | W | 0-2 |
| Orléans Masters | 2023/04/07 15:05 | Magnus Johannesen v Jun Hao Leong | L | 2-0 |