| Challenger Series TT | 2023/04/06 17:50 | Damian Zech v Florian Bourrassaud | L | 1-3 |
| Challenger Series TT | 2023/04/06 16:30 | Damian Zech v Yannick Vostes | L | 0-3 |
| Challenger Series TT | 2023/04/06 11:50 | Damian Zech v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/04/06 09:10 | Damian Zech v Kirill Fadeev | L | 0-3 |
| Challenger Series TT | 2023/04/06 06:30 | Damian Zech v Makoto Nogami | L | 1-3 |
| Challenger Series TT | 2023/03/10 10:10 | Damian Zech v Thibault Poret | L | 0-3 |
| Challenger Series TT | 2023/03/09 20:50 | Damian Zech v Guilherme Teodoro | L | 0-3 |
| Challenger Series TT | 2023/03/09 18:10 | Damian Zech v Samuel Amann | W | 3-2 |
| Challenger Series TT | 2023/04/06 18:30 | Yonghun Lee v Dimitrije Levajac | L | 1-3 |
| Challenger Series TT | 2023/04/06 15:10 | Yonghun Lee v Makoto Nogami | W | 3-0 |
| Challenger Series TT | 2023/04/06 13:10 | Florian Bourrassaud v Yonghun Lee | L | 3-0 |
| Challenger Series TT | 2023/04/06 10:30 | Yannick Vostes v Yonghun Lee | L | 3-0 |
| Challenger Series TT | 2023/04/06 07:50 | Dennis Klein v Yonghun Lee | L | 3-1 |
| WTT Singapore Smash Quals | 2023/03/07 06:15 | Yonghun Lee v Cheng-Ting Liao | L | 0-3 |
| WTT Feeder Dusseldorf II | 2023/02/23 12:10 | Youssef Abdel-Aziz v Yonghun Lee | L | 3-1 |
| WTT Feeder Dusseldorf II | 2023/02/22 15:40 | Benno Oehme v Yonghun Lee | W | 2-3 |