Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/10 16:30 | Johannes Willeke v Armin Alicic | L | 0-3 |
| Challenger Series TT | 2023/11/27 16:50 | Aljaz Godec v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2023/11/27 14:50 | Johannes Willeke v Liang Qiu | L | 2-3 |
| Challenger Series TT | 2023/11/27 11:30 | Johannes Willeke v Damian Zech | W | 3-2 |
| Challenger Series TT | 2023/11/27 09:30 | Johannes Willeke v Michael Fuchs | L | 0-3 |
| Challenger Series TT | 2023/10/31 10:10 | Johannes Willeke v Simon Berglund | L | 0-3 |
| Challenger Series TT | 2023/10/30 20:50 | Johannes Willeke v Daniel Rinderer | L | 0-3 |
| Challenger Series TT | 2023/10/30 18:10 | Johannes Willeke v Samuel Amann | W | 3-1 |
| Challenger Series TT | 2023/10/30 15:30 | Mike Hollo v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/11/27 17:30 | Kirill Fadeev v Armin Alicic | L | 3-0 |
| Challenger Series TT | 2023/11/27 15:30 | Damian Zech v Armin Alicic | L | 3-2 |
| Challenger Series TT | 2023/11/27 12:10 | Michael Fuchs v Armin Alicic | L | 3-2 |
| Challenger Series TT | 2023/11/27 07:30 | Aljaz Godec v Armin Alicic | L | 3-2 |
| Challenger Series TT | 2023/11/07 10:50 | Mike Hollo v Armin Alicic | L | 3-1 |
| Challenger Series TT | 2023/11/07 09:30 | Armin Alicic v Nico Longhino | L | 2-3 |
| Challenger Series TT | 2023/11/06 19:30 | Guilherme Teodoro v Armin Alicic | L | 3-0 |
| Challenger Series TT | 2023/11/06 16:50 | Jong-Eon Yeon v Armin Alicic | W | 1-3 |