Stadium: Ochsenhausen, Germany Round: 2
| Challenger Series TT | 2023/10/23 09:10 | Mike Hollo v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/11/27 18:50 | Damian Zech v Liang Qiu | L | 0-3 |
| Challenger Series TT | 2023/11/27 15:30 | Damian Zech v Armin Alicic | W | 3-2 |
| Challenger Series TT | 2023/11/27 14:10 | Michael Fuchs v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/11/27 11:30 | Johannes Willeke v Damian Zech | L | 3-2 |
| Challenger Series TT | 2023/11/27 08:50 | Kirill Fadeev v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/10/24 09:50 | Damian Zech v Carlo Rossi | L | 0-3 |
| Challenger Series TT | 2023/10/24 07:50 | Damian Zech v Guilherme Teodoro | L | 1-3 |
| Challenger Series TT | 2023/10/23 18:30 | Damian Zech v Finn Luu | L | 1-3 |
| Challenger Series TT | 2023/11/21 14:30 | Dauud Cheaib v Mike Hollo | L | 3-1 |
| Challenger Series TT | 2023/11/21 13:05 | Mike Hollo v Norbert Tauler | W | 3-0 |
| Challenger Series TT | 2023/11/21 11:30 | Mike Hollo v Rafael Turrini | W | 3-0 |
| Challenger Series TT | 2023/11/21 08:50 | Mike Hollo v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/11/20 20:10 | Mike Hollo v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/11/20 15:30 | Mike Hollo v Abdelbasset Chaichi | W | 3-1 |
| Challenger Series TT | 2023/11/20 13:30 | Mike Hollo v Liang Qiu | W | 3-0 |
| Challenger Series TT | 2023/11/20 10:10 | Jeromy Loffler v Mike Hollo | W | 0-3 |