Home History
| All England Open | 2017/03/15 18:50 | Dan Lin v Koki Watanabe | L | 2-0 |
| All England Open | 2017/03/14 17:00 | Koki Watanabe v Milan Ludik | W | 2-1 |
| Thailand Masters | 2017/02/09 14:00 | Khosit Phetpradab v Koki Watanabe | L | 2-0 |
| Thailand Masters | 2017/02/08 11:30 | Koki Watanabe v Teerapat Kleawan | W | 2-0 |
| Thailand Masters | 2017/02/07 11:20 | Arun Kumar v Koki Watanabe | W | 1-2 |
| All England Open | 2016/12/07 04:00 | Koki Watanabe v Daren Liew | L | 0-2 |
| Indonesia Masters XD | 2016/10/12 09:10 | Suppanyu Avihingsanon v Koki Watanabe | L | 3-1 |