Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2025/01/17 11:30 | Olav Kosolosky v Johannes Willeke | W | 3-1 |
| Challenger Series TT | 2025/01/16 16:00 | Johannes Willeke v Olav Kosolosky | W | 1-3 |
| Challenger Series TT | 2025/02/14 11:30 | Olav Kosolosky v Liang Qiu | W | 3-1 |
| Challenger Series TT | 2025/02/14 10:15 | Olav Kosolosky v Miguel Nunez | L | 0-3 |
| Challenger Series TT | 2025/02/14 07:30 | Louis Price v Olav Kosolosky | W | 2-3 |
| Challenger Series TT | 2025/02/13 17:30 | Liang Qiu v Olav Kosolosky | W | 1-3 |
| Challenger Series TT | 2025/02/13 16:00 | Tobias Saltzer v Olav Kosolosky | W | 2-3 |
| Challenger Series TT | 2025/02/13 14:30 | Olav Kosolosky v Sudhanshu Grover | W | 3-1 |
| Challenger Series TT | 2025/02/13 12:30 | Olav Kosolosky v Damian Zech | W | 3-0 |
| Challenger Series TT | 2025/02/13 11:00 | Olav Kosolosky v Vincent Senkbeil | W | 3-0 |
| Challenger Series TT | 2025/01/17 11:30 | Olav Kosolosky v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2025/01/17 10:45 | Jeromy Loffler v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2025/01/17 09:00 | Johannes Willeke v Boris Brnovic | W | 3-2 |
| Challenger Series TT | 2025/01/16 18:00 | Johannes Willeke v Damian Zech | W | 3-2 |
| Challenger Series TT | 2025/01/16 16:00 | Johannes Willeke v Olav Kosolosky | L | 1-3 |
| Challenger Series TT | 2025/01/16 15:00 | Johannes Willeke v Peter Hribar | W | 3-2 |
| Challenger Series TT | 2025/01/16 11:30 | Johannes Willeke v Aleksandar Grujic | W | 3-0 |
| Challenger Series TT | 2025/01/16 09:30 | Johannes Willeke v Alfred Dela Pena | W | 3-2 |