Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2025/12/01 18:00 | Karl Walter v Pylyp Koloidenko | W | 3-2 |
| Challenger Series TT | 2025/11/06 11:00 | Karl Walter v Pylyp Koloidenko | L | 1-3 |
| Challenger Series TT | 2025/11/04 09:30 | Pylyp Koloidenko v Karl Walter | L | 3-1 |
| Challenger Series TT | 2025/08/11 16:30 | Pylyp Koloidenko v Karl Walter | W | 0-3 |
| Challenger Series TT | 2025/08/05 08:00 | Karl Walter v Pylyp Koloidenko | W | 3-0 |
| Challenger Series TT | 2025/06/10 06:30 | Karl Walter v Pylyp Koloidenko | L | 0-3 |
| Challenger Series TT | 2025/12/02 09:00 | Karl Walter v William Koehl | W | 3-0 |
| Challenger Series TT | 2025/12/01 18:00 | Karl Walter v Pylyp Koloidenko | W | 3-2 |
| Challenger Series TT | 2025/12/01 16:00 | Karl Walter v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2025/12/01 15:00 | Karl Walter v Guillaume Alcayde | W | 3-1 |
| Challenger Series TT | 2025/12/01 11:30 | Karl Walter v Marius Henninger | L | 0-3 |
| Challenger Series TT | 2025/12/01 09:30 | Karl Walter v Erik Huzsvar | L | 1-3 |
| Challenger Series TT | 2025/12/01 07:30 | Karl Walter v Timothy Falconnier | L | 2-3 |
| Challenger Series TT | 2025/11/07 12:10 | Karl Walter v Mauro Scharrer | L | 1-3 |
| Challenger Series TT | 2025/12/04 16:30 | Marco Stefanidis v Pylyp Koloidenko | W | 0-3 |
| Challenger Series TT | 2025/12/04 14:30 | Olav Kosolosky v Pylyp Koloidenko | L | 3-0 |
| Challenger Series TT | 2025/12/04 13:00 | Guillaume Alcayde v Pylyp Koloidenko | L | 3-0 |
| Challenger Series TT | 2025/12/04 10:00 | Damian Zech v Pylyp Koloidenko | L | 3-2 |
| Challenger Series TT | 2025/12/04 08:00 | Jakub Harencak v Pylyp Koloidenko | L | 3-2 |
| Challenger Series TT | 2025/12/02 09:30 | Erik Huzsvar v Pylyp Koloidenko | L | 3-1 |
| Challenger Series TT | 2025/12/01 18:00 | Karl Walter v Pylyp Koloidenko | L | 3-2 |
| Challenger Series TT | 2025/12/01 16:30 | Pylyp Koloidenko v William Koehl | W | 3-1 |