| Giraldilla Int. XD | 2018/07/25 06:10 | Thammasin, S. v Kodai Naraoka | W | 2-0 |
| Macau Open 2019, MS | 2019/10/31 05:20 | Lee, Dong Keun v Thammasin, S. | W | 0-2 |
| Macau Open 2019, MS | 2019/10/30 02:20 | Joo Ven Soong v Thammasin, S. | W | 1-2 |
| Open de France | 2019/10/22 10:50 | Thammasin, S. v Shesar Hiren Rhustavito | L | 0-2 |
| Denmark Open | 2019/10/18 14:20 | Thammasin, S. v Tommy Sugiarto | L | 0-2 |
| Denmark Open | 2019/10/17 07:20 | Mark Caljouw v Thammasin, S. | W | 1-2 |
| Denmark Open | 2019/10/15 07:20 | Thammasin, S. v Parupalli, Kashyap | W | 2-0 |
| Korea Open | 2019/09/25 12:00 | Thammasin, S. v Tien Chen Chou | L | 0-2 |
| Fuzhou China Open 2019, MS | 2019/09/17 03:30 | Liew, Daren v Thammasin, S. | L | 2-1 |
| Macau Open 2019, MS | 2019/10/31 06:05 | Leverdez, Brice v Kodai Naraoka | W | 1-2 |
| Macau Open 2019, MS | 2019/10/30 03:40 | Avihingsanon, Suppanyu v Kodai Naraoka | W | 0-2 |
| Vietnam Open | 2019/09/12 04:00 | Kodai Naraoka v Verma, Sourabh | L | 0-2 |
| Vietnam Open | 2019/09/11 13:40 | Kuncoro, Sony Dwi v Kodai Naraoka | W | 0-2 |
| Akita Masters 2019, MS | 2019/08/14 03:30 | Sakai, Kazumasa v Kodai Naraoka | L | 2-0 |
| Akita Masters 2019, MS | 2019/08/13 01:10 | Kodai Naraoka v Hassan, Farouk Mohammed | W | 2-0 |
| Russia Open 2019, MS | 2019/07/20 03:00 | Kodai Naraoka v Kean Yew Loh | L | 0-2 |
| Russia Open 2019, MS | 2019/07/19 04:00 | Kodai Naraoka v Nhat Nguyen | W | 2-0 |