| Vietnam Open | 2019/09/12 02:00 | Kwang Hee Heo v Koki Watanabe | L | 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 |
| Belgian Int. | 2019/09/13 17:10 | Kai Schaefer v Victor Svendsen | L | 1-2 |
| Belgian Int. | 2019/09/13 09:25 | Kai Schaefer v Ygor Coelho | W | 2-1 |
| Belgian Int. | 2019/09/12 17:30 | Kai Schaefer v Toby Penty | W | 2-1 |
| Belgian Int. | 2019/09/12 13:30 | Kai Schaefer v Felix Burestedt | W | 2-0 |
| Kharkiv Int. | 2019/09/06 07:30 | Eetu Heino v Kai Schaefer | L | 2-0 |
| World Championships | 2019/08/19 08:40 | Guangzu Lu v Kai Schaefer | L | 2-0 |
| US Open | 2019/07/10 23:30 | Kai Schaefer v Xiaodong Sheng | L | 0-2 |
| Canada Open | 2019/07/03 20:20 | Kai Schaefer v Lucas Claerbout | L | 0-2 |