Head to Head
| Chinese Taipei Open | 2019/09/05 09:15 | Koki Watanabe v Kean Yew Loh | L | 2-1 |
Home History
| Asia Championships | 2022/04/27 05:00 | Kean Yew Loh v Kantaphon Wangcharoen | W | 2-1 |
| All England Open | 2022/03/16 11:40 | Kean Yew Loh v Anders Antonsen | L | 1-2 |
| German Open | 2022/03/09 15:45 | Kean Yew Loh v Brian Yang | L | 1-2 |
| India Open | 2022/01/16 08:50 | Kean Yew Loh v Lakshya Sen | L | 0-2 |
| India Open | 2022/01/14 08:50 | Sergey Sirant v Kean Yew Loh | W | 0-2 |
| India Open | 2022/01/13 06:10 | Kean Yew Loh v Joo Ven Soong | W | 2-0 |
| India Open | 2022/01/11 06:50 | Kean Yew Loh v Xiaodong Sheng | W | 2-1 |
| World Championships | 2021/12/19 10:20 | Srikanth Kidambi v Kean Yew Loh | W | 0-2 |
Away History
| Asia Championships | 2022/04/27 05:40 | Dmitriy Panarin v Koki Watanabe | W | 0-2 |
| Korea Open | 2022/04/06 03:30 | Koki Watanabe v Kunlavut Vitidsarn | L | 0-2 |
| Swiss Open | 2022/03/23 11:10 | Koki Watanabe v Christo Popov | L | 1-2 |
| World Championships | 2021/12/14 12:20 | Junpeng Zhao v Koki Watanabe | L | 2-0 |
| World Championships | 2021/12/12 10:50 | Anuoluwapo Juwon Opeyori v Koki Watanabe | W | 0-2 |
| Indonesia Open | 2021/11/24 07:00 | Koki Watanabe v Viktor Axelsen | L | 0-2 |
| Indonesia Masters | 2021/11/18 02:00 | Ka Long Angus Ng v Koki Watanabe | L | 2-0 |
| Indonesia Masters | 2021/11/16 09:50 | Koki Watanabe v Kantaphon Wangcharoen | W | 2-0 |