Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/10 06:30 | Johannes Willeke v Samuel Amann | W | 3-1 |
| Challenger Series TT | 2023/06/23 08:30 | Samuel Amann v Johannes Willeke | W | 0-3 |
| Challenger Series TT | 2023/10/30 15:30 | Mike Hollo v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/10/30 12:50 | Kirill Fadeev v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/10/30 10:50 | Johannes Willeke v Alexander Valuch | L | 2-3 |
| Challenger Series TT | 2023/10/30 08:50 | Johannes Willeke v Martin Andersen | L | 2-3 |
| Challenger Series TT | 2023/07/14 10:30 | Benjamin Fruchart v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2023/07/14 06:30 | Michael Engelhardt v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/07/13 18:30 | Johannes Willeke v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/07/13 15:10 | Johannes Willeke v Kirill Fadeev | L | 0-3 |
| Challenger Series TT | 2023/10/30 16:10 | Martin Andersen v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/10/30 13:30 | Mike Hollo v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/10/30 12:10 | Daniel Rinderer v Samuel Amann | L | 3-1 |
| Challenger Series TT | 2023/10/30 07:30 | Kirill Fadeev v Samuel Amann | L | 3-1 |
| Challenger Series TT | 2023/09/22 09:10 | Samuel Amann v Sushmit Sriram | L | 0-3 |
| Challenger Series TT | 2023/09/22 06:30 | Samuel Amann v Marius Henninger | L | 2-3 |
| Challenger Series TT | 2023/09/21 16:30 | Samuel Amann v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2023/09/21 11:50 | Samuel Amann v Tom Colvin | L | 0-3 |