| Bulgarian Int. Qual | 2022/10/06 07:00 | 파파도풀로스, 테오도로스 v Evgeni Uzunov | W | 1-2 |
| Bulgarian Int. Qual | 2022/10/06 07:00 | Marian Liptak v Justin Seibel | W | 0-2 |
| Croatian Int. Qual | 2022/09/29 11:40 | 킥리츠, 마티아스 v Justin Seibel | L | 2-0 |
| Croatia Open | 2022/06/20 17:40 | Ming Hong Lim v Justin Seibel | L | 2-0 |
| Bonn Int. Qual | 2022/06/15 08:30 | Justin Hoh v Justin Seibel | L | 2-0 |
| Luxembourg Open Qual | 2022/05/05 08:20 | 와아젠, 마틴 v Justin Seibel | L | 2-0 |
| Italian Int. Qual | 2021/12/16 12:04 | Sacha Leveque v Justin Seibel | L | 2-0 |
| Slovenia Future Series Qual | 2021/11/25 10:10 | 올슨, 루드비히 페트레 v Justin Seibel | L | 2-0 |
| Cyprus Int. Qual | 2021/10/14 12:00 | Justin Seibel v Magnus Bach Kristensen | L | 0-2 |