| All England Open | 2017/02/09 14:00 | Khosit Phetpradab v Koki Watanabe | L | 2-0 |
| Giraldilla Int. XD | 2017/09/19 02:00 | Koki Watanabe v Takuma Ueda | W | 2-1 |
| Indonesia Masters - GD | 2017/07/22 01:30 | Koki Watanabe v Kwang Hee Heo | L | 1-2 |
| Indonesia Masters - GD | 2017/07/21 02:45 | Kieran Merrilees v Koki Watanabe | W | 0-2 |
| Indonesia Masters - GD | 2017/07/20 18:30 | Lucas Corvee v Koki Watanabe | W | 1-2 |
| Indonesia Masters - GD | 2017/07/19 16:00 | Gustavo Morales v Koki Watanabe | W | 0-2 |
| Indonesia Masters - GD | 2017/07/14 22:40 | Koki Watanabe v Kanta Tsuneyama | L | 0-2 |
| Indonesia Masters - GD | 2017/07/13 21:50 | Karan Rajan Rajarajan v Koki Watanabe | W | 0-2 |
| Indonesia Masters - GD | 2017/07/12 18:20 | Parupalli Kashyap v Koki Watanabe | W | 1-2 |
| Giraldilla Int. XD | 2017/09/19 02:45 | Khosit Phetpradab v Hyeok Jin Jeon | W | 2-0 |
| Giraldilla Int. XD | 2017/09/10 06:00 | Khosit Phetpradab v Suppanyu Avihingsanon | W | 2-0 |
| Giraldilla Int. XD | 2017/09/09 07:20 | Kodai Naraoka v Khosit Phetpradab | W | 1-2 |
| Giraldilla Int. XD | 2017/09/08 11:40 | Khosit Phetpradab v Shesar Hiren Rhustavito | W | 2-1 |
| Giraldilla Int. XD | 2017/09/07 10:00 | Khosit Phetpradab v Yu Igarashi | W | 2-0 |
| Giraldilla Int. XD | 2017/09/06 02:10 | Khosit Phetpradab v Kuei Chun Shih | W | 2-0 |
| Giraldilla Int. XD | 2017/09/05 09:35 | Khosit Phetpradab v Chi Wing Lim | W | 2-1 |
| Indonesia Masters - GD | 2017/06/30 11:31 | Zii Jia Lee v Khosit Phetpradab | L | 2-0 |