| Challenger Series TT | 06/09 11:00 | - | Karl Walter v Enio Mendes | L | 1-3 | |
| Challenger Series TT | 06/09 08:30 | - | Olav Kosolosky v Karl Walter | L | 3-1 | |
| Challenger Series TT | 06/09 07:00 | - | Karl Walter v Johannes Willeke | W | 3-0 | |
| Challenger Series TT | 05/13 08:00 | - |
Karl Walter v
Rafael Turrini
|
L | 0-3 | |
| Challenger Series TT | 05/13 06:30 | - | Karl Walter v Viktor Yefimov | - | Cancelled | |
| Challenger Series TT | 05/12 15:30 | - | Karl Walter v Florian Bluhm | L | 0-3 | |
| Challenger Series TT | 05/12 12:30 | - | Karl Walter v Matias Danzer | L | 1-3 | |
| Challenger Series TT | 05/12 11:00 | - | Karl Walter v Akos Kishegyi | L | 1-3 | |
| Challenger Series TT | 05/12 08:30 | - | Frantisek Onderka v Karl Walter | L | 3-1 | |
| Challenger Series TT | 05/12 07:00 | - |
Karl Walter v
Kirill Fadeev
|
L | 0-3 |
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