Head to Head
| Thomas Cup | 2024/05/02 11:05 | Koki Watanabe v Jun Hao Leong | W | 0-2 |
| Orleans Masters | 2023/04/06 16:00 | Jun Hao Leong v Koki Watanabe | W | 2-0 |
| Indonesia Masters | 2022/10/20 09:00 | Jun Hao Leong v Koki Watanabe | W | 2-1 |
| Thomas Cup | 2024/05/02 11:05 | Koki Watanabe v Jun Hao Leong | W | 0-2 |
| Orleans Masters | 2023/04/06 16:00 | Jun Hao Leong v Koki Watanabe | W | 2-0 |
| Indonesia Masters | 2022/10/20 09:00 | Jun Hao Leong v Koki Watanabe | W | 2-1 |