| Challenger Series TT | 2022/12/12 16:10 | Marius Henninger v Karl Zimmermann | L | 3-2 |
| Challenger Series TT | 2022/12/13 09:30 | Kenan Hrnic v Karl Zimmermann | W | 1-3 |
| Challenger Series TT | 2022/12/13 08:10 | Sven Happek v Karl Zimmermann | W | 1-3 |
| Challenger Series TT | 2022/12/12 18:10 | Nikola Grujic v Karl Zimmermann | W | 1-3 |
| Challenger Series TT | 2022/12/12 16:10 | Marius Henninger v Karl Zimmermann | L | 3-2 |
| Challenger Series TT | 2022/12/12 13:30 | Jeromy Loffler v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2022/12/12 12:10 | Anton Limonov v Karl Zimmermann | L | 3-0 |
| Challenger Series TT | 2022/12/12 07:30 | Makoto Nogami v Karl Zimmermann | L | 3-2 |
| Challenger Series TT | 2022/11/11 11:30 | Karl Zimmermann v Ronit Bhanja | L | 1-3 |
| Challenger Series TT | 2023/01/05 12:10 | Liang Qiu v Marius Henninger | W | 2-3 |
| Challenger Series TT | 2023/01/05 07:30 | Daniel Rinderer v Marius Henninger | W | 2-3 |
| Challenger Series TT | 2022/12/16 13:10 | Kirill Fadeev v Marius Henninger | L | 3-1 |
| Challenger Series TT | 2022/12/16 12:25 | Peter Hribar v Marius Henninger | L | 3-0 |
| Challenger Series TT | 2022/12/16 09:30 | Pavol Mego v Marius Henninger | W | 0-3 |
| Challenger Series TT | 2022/12/16 08:10 | Josip Huzjak v Marius Henninger | W | 0-3 |
| Challenger Series TT | 2022/12/15 18:10 | Sven Happek v Marius Henninger | W | 0-3 |
| Challenger Series TT | 2022/12/15 16:10 | Peter Hribar v Marius Henninger | L | 3-0 |