| Qatar Open XD | 2019/03/26 11:00 | Oshima, Yuya v Seo, Hyundeok | L | 4-1 |
| Qatar Open XD | 2019/03/26 07:00 | Seo, Hyundeok v Leonardo Mutti | W | 4-2 |
| Qatar Open XD | 2017/11/25 12:05 | Alvaro Robles v Seo, Hyundeok | L | 4-2 |
| Qatar Open XD | 2017/11/13 16:50 | Seo, Hyundeok v Moregard, Malte | L | 2-4 |
| Qatar Open XD | 2017/07/04 05:10 | Mizutani, Jun v Seo, Hyundeok | L | 4-0 |
| Qatar Open XD | 2017/07/03 06:00 | Seo, Hyundeok v Zhang, Shaoping | W | 4-0 |
| Qatar Open XD | 2017/07/02 10:15 | Seo, Hyundeok v Sun, Chia-Hung | W | 4-0 |
| Qatar Open XD | 2017/07/02 05:00 | Seo, Hyundeok v Houghton, Benjamin | W | 4-0 |
| Thailand Open U21 | 2019/05/23 03:00 | Jeremy Hazin v Huang, Yu-Jen | W | 2-3 |