| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | W | 2-1 |
| Indonesia Masters XD | 2017/07/22 01:30 | Koki Watanabe v Kwang Hee Heo | W | 1-2 |
| Chinese Taipei Open | 2019/09/08 05:00 | Tien Chen Chou v Kwang Hee Heo | L | 2-0 |
| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | W | 2-1 |
| Chinese Taipei Open | 2019/09/06 10:30 | Kwang Hee Heo v Thomas Rouxel | W | 2-0 |
| Chinese Taipei Open | 2019/09/05 09:15 | Lucas Corvee v Kwang Hee Heo | W | 0-2 |
| Chinese Taipei Open | 2019/09/04 06:10 | Kwang Hee Heo v Tommy Sugiarto | W | 2-1 |
| World Championships | 2019/08/20 12:40 | Jonatan Christie v Kwang Hee Heo | L | 2-0 |
| World Championships | 2019/08/19 07:00 | Milan Ludik v Kwang Hee Heo | W | 0-2 |
| Hyderabad Open | 2019/08/10 10:00 | Kwang Hee Heo v Kean Yew Loh | L | 1-2 |
| Vietnam Open | 2019/09/11 02:30 | Koki Watanabe v Miha Ivanic | W | 2-0 |
| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | L | 2-1 |
| Chinese Taipei Open | 2019/09/06 09:00 | Chia Hung Lu v Koki Watanabe | W | 0-2 |
| Chinese Taipei Open | 2019/09/05 09:15 | Koki Watanabe v Kean Yew Loh | W | 2-1 |
| Chinese Taipei Open | 2019/09/04 12:30 | Chih Chieh Yang v Koki Watanabe | W | 0-2 |
| Akita Masters | 2019/08/16 02:15 | Yu Igarashi v Koki Watanabe | L | 2-1 |
| Akita Masters | 2019/08/15 05:25 | Koki Watanabe v Pannawit Thongnuam | W | 2-0 |
| Akita Masters | 2019/08/14 02:10 | Koki Watanabe v Minoru Koga | W | 2-0 |