Head to Head
| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | W | 2-1 |
| US Open | 2017/07/22 01:30 | Koki Watanabe v Kwang Hee Heo | W | 1-2 |
| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | W | 2-1 |
| US Open | 2017/07/22 01:30 | Koki Watanabe v Kwang Hee Heo | W | 1-2 |