| Estonie Int. - | 2020/01/11 09:40 | Koga, Minoru v Takuma Obayashi | W | 1-2 |
| Thailand Int. | 2023/03/09 07:00 | Takuma Obayashi v Rithvik Sanjeevi Satish Kumar | W | 2-1 |
| Thailand Int. | 2023/03/07 12:40 | Takuma Obayashi v Lu, C. H. | W | 2-0 |
| Canada Open | 2022/10/02 19:40 | Takuma Obayashi v Alex Lanier | L | 1-2 |
| Canada Open | 2022/10/01 19:20 | Takuma Obayashi v Misha Zilberman | W | 2-0 |
| Canada Open | 2022/09/30 22:00 | Brian Yang v Takuma Obayashi | W | 0-2 |
| Canada Open | 2022/09/30 00:00 | Pablo Abian v Takuma Obayashi | W | 0-2 |
| Canada Open | 2022/09/28 17:00 | Johnathan Akin-Mulrooney v Takuma Obayashi | W | 0-2 |
| Canada Open | 2022/09/28 00:00 | Jett Ko v Takuma Obayashi | W | 0-2 |
| Thailand Int. | 2023/03/10 08:10 | Koga, Minoru v Hyeok Jin Jeon | W | 2-0 |
| Thailand Int. | 2023/03/09 07:45 | Sholeh Aidil v Koga, Minoru | W | 0-2 |
| Thailand Int. | 2023/03/08 12:50 | Hai Dang Nguyen v Koga, Minoru | W | 0-2 |
| Estonie Int. - | 2023/01/13 15:40 | Koga, Minoru v Magnus Johannesen | L | 0-2 |
| Estonie Int. - | 2023/01/13 08:45 | Koga, Minoru v Elias Bracke | W | 2-0 |
| Irish Open | 2022/11/18 10:20 | Magnus Johannesen v Koga, Minoru | L | 2-0 |
| Irish Open | 2022/11/17 20:20 | Burestedt, Felix v Koga, Minoru | W | 0-2 |
| Irish Open | 2022/11/17 11:40 | Koga, Minoru v Nikolov, Daniel | W | 2-0 |