| Bulgarian Int. Qual | 2023/10/05 15:10 | Justin Seibel v Niilo Nyqvist | L | 0-2 |
| Bulgarian Int. Qual | 2023/10/05 13:00 | Justin Seibel v Helmer Andersson | W | 2-1 |
| Bulgarian Int. Qual | 2023/10/05 07:35 | Justin Seibel v Berat Ayindi | W | 2-0 |
| Croatian Int. | 2023/09/29 09:55 | Martin Bundgaard v Justin Seibel | L | 2-0 |
| Croatia Int. Qual | 2023/09/28 18:30 | Szymon Stokfisz v Justin Seibel | W | 0-2 |
| Croatia Int. Qual | 2023/09/28 08:10 | Justin Seibel v Arun Kumar | W | 2-1 |
| Latvia Int. Qual | 2023/08/31 08:20 | Neil Bhabuta v Justin Seibel | L | 2-1 |
| Latvia Int. Qual | 2023/08/30 12:00 | Emil Dantler v Justin Seibel | W | 1-2 |
| KL Masters Qual | 2023/10/31 08:45 | Kai Hern Huan v Yu-Han Hsu | W | 1-2 |
| KL Masters Qual | 2023/10/31 04:50 | Rasindu Hendahewa v Yu-Han Hsu | W | 1-2 |
| Kaohsiung Masters Qual | 2023/09/26 02:20 | Shao-Hsuan Chen v Yu-Han Hsu | L | 2-1 |
| Vietnam Open | 2023/09/13 01:40 | Yu-Han Hsu v Koo Takahashi | L | 0-2 |
| Vietnam Open Qual | 2023/09/12 07:20 | Yu-Han Hsu v Ryoma Muramoto | W | 2-1 |
| Vietnam Open Qual | 2023/09/12 03:55 | Yu-Han Hsu v Le Manh An Tran | W | 2-0 |
| Bonn Int. | 2023/06/02 08:20 | Yu-Han Hsu v Kuan Lin Kuo | L | 0-2 |
| Bonn Int. | 2023/06/01 13:10 | Yu-Han Hsu v David K Kristensen | W | 2-0 |