| Giraldilla Int. XD | 2017/04/11 03:50 | Kwang Hee Heo v Kazumasa Sakai | L | 2-0 |
| Giraldilla Int. XD | 2017/03/28 09:54 | Kazumasa Sakai v Kwang Hee Heo | W | 2-0 |
| Australian Open | 2019/06/07 08:00 | Tzu Wei Wang v Kazumasa Sakai | L | 2-0 |
| Australian Open | 2019/06/06 03:45 | Kazumasa Sakai v Kantaphon Wangcharoen | W | 2-1 |
| Australian Open | 2019/06/05 01:40 | Kazumasa Sakai v Cheuk Yiu Lee | W | 2-0 |
| New Zealand Open | 2019/05/02 02:40 | Zii Jia Lee v Kazumasa Sakai | L | 2-0 |
| New Zealand Open | 2019/05/01 02:00 | Zeqi Zhou v Kazumasa Sakai | W | 1-2 |
| Asia Championships | 2019/04/24 04:00 | Sameer Verma v Kazumasa Sakai | L | 2-1 |
| All England Open | 2019/03/06 16:00 | Jan O Jorgensen v Kazumasa Sakai | L | 2-0 |
| German Open | 2019/02/27 18:45 | Cheuk Yiu Lee v Kazumasa Sakai | L | 2-0 |
| Canada Open | 2019/07/03 01:20 | Kwang Hee Heo v Chia Hao Lee | W | 2-0 |
| Australian Open | 2019/06/05 03:00 | Kwang Hee Heo v Anthony Sinisuka Ginting | L | 1-2 |
| Sudirman Cup | 2019/05/23 10:30 | Kwang Hee Heo v Kantaphon Wangcharoen | L | 0-2 |
| Sudirman Cup | 2019/05/20 11:00 | Kwang Hee Heo v Ka Long Angus Ng | L | 1-2 |
| New Zealand Open | 2019/05/02 04:40 | Kwang Hee Heo v Feixiang Sun | L | 1-2 |
| New Zealand Open | 2019/05/01 00:20 | Junpeng Zhao v Kwang Hee Heo | W | 0-2 |
| Vietnam Int. | 2019/04/12 07:00 | Kwang Hee Heo v Krishna Adi Nugraha | L | 0-2 |
| Vietnam Int. | 2019/04/11 11:00 | Kwang Hee Heo v Giap Chin Goh | W | 2-1 |