| Challenger Series TT | 12/12 13:30 | - | Jeromy Loffler v Karl Zimmermann | L | 3-1 | |
| Challenger Series TT | 12/12 12:10 | - | Anton Limonov v Karl Zimmermann | L | 3-0 | |
| Challenger Series TT | 12/12 07:30 | - | Makoto Nogami v Karl Zimmermann | L | 3-2 | |
| Challenger Series TT | 11/11 11:30 | - | Karl Zimmermann v Ronit Bhanja | L | 1-3 | |
| Challenger Series TT | 11/11 08:50 | - | Karl Zimmermann v Dillon Chambers | W | 3-0 | |
| Challenger Series TT | 11/10 20:10 | - | Karl Zimmermann v Martin Buch Andersen | L | 2-3 | |
| Challenger Series TT | 11/10 15:30 | - | Karl Zimmermann v Jeet Chandra | L | 0-3 | |
| Challenger Series TT | 11/10 13:30 | - | Karl Zimmermann v Jeromy Loffler | L | 0-3 | |
| Challenger Series TT | 11/10 10:10 | - | Michael Engelhardt v Karl Zimmermann | W | 0-3 | |
| Challenger Series TT | 11/10 08:10 | - | Karl Zimmermann v Ahmed El-Mahdy | L | 0-3 | |
| Challenger Series TT | 10/11 10:30 | - | Karl Zimmermann v Liang Qiu | W | 3-1 | |
| Challenger Series TT | 10/11 07:50 | - | Karl Zimmermann v Andres Martinez | L | 1-3 | |
| Challenger Series TT | 10/10 19:10 | - | Karl Zimmermann v Patrik Juhasz | L | 0-3 | |
| Challenger Series TT | 10/10 14:30 | - | Karl Zimmermann v Carlos Muhlbach | L | 1-3 | |
| Challenger Series TT | 10/10 12:30 | - | Karl Zimmermann v Sven Happek | L | 0-3 | |
| Challenger Series TT | 10/10 09:10 | - | Florian Bluhm v Karl Zimmermann | L | 3-0 | |
| Challenger Series TT | 10/10 07:10 | - | Karl Zimmermann v Kirill Fadeev | L | 2-3 |