| Challenger Series TT | 07/22 10:30 | 50 | William Koehl v Sven Happek | W | 3-0 | |
| Challenger Series TT | 07/22 09:15 | 2 | Mike Hollo v William Koehl | L | 3-2 | |
| Challenger Series TT | 07/22 06:30 | - | Thomas Pellny v William Koehl | L | 3-1 | |
| Challenger Series TT | 07/21 16:30 | - | Manuel Kupfer v William Koehl | W | 0-3 | |
| Challenger Series TT | 07/21 15:00 | - | Mike Hollo v William Koehl | L | 3-1 | |
| Challenger Series TT | 07/21 13:30 | - | William Koehl v Samuel Amann | W | 3-0 | |
| Challenger Series TT | 07/21 11:30 | - | William Koehl v Mark Juhasz | W | 3-0 | |
| Challenger Series TT | 07/21 10:00 | - | William Koehl v Francesco Patera | L | 0-3 | |
| Challenger Series TT | 07/21 08:00 | - | Oleksii Naplokov v William Koehl | W | 2-3 | |
| Challenger Series TT | 07/15 10:30 | 1 | Dennis Klein v William Koehl | L | 3-0 | |
| Challenger Series TT | 07/15 09:15 | 2 | Luis Kraus v William Koehl | W | 1-3 | |
| Challenger Series TT | 07/15 07:30 | - | William Koehl v Dennis Klein | L | 0-3 | |
| Challenger Series TT | 07/14 15:00 | - | William Koehl v Aliafsar Yunusov | W | 3-1 | |
| Challenger Series TT | 07/14 13:30 | - | William Koehl v Luis Kraus | L | 2-3 | |
| Challenger Series TT | 07/14 13:00 | - | William Koehl v Francesco Maragioglio | W | 3-0 | |
| Challenger Series TT | 07/14 10:30 | - | William Koehl v Marius Henninger | D | Cancelled | |
| Challenger Series TT | 07/14 08:30 | - | William Koehl v Christian Tomsic | W | 3-0 | |
| Challenger Series TT | 07/14 06:30 | - | William Koehl v Okan University | W | 3-0 | |
| TT Star Series | 07/10 11:33 | - | William Koehl v Nazar Tretiak | L | 2-3 | |
| TT Star Series | 07/10 10:29 | - | Benjamin Fruchart v William Koehl | L | 3-0 | |
| TT Star Series | 07/10 09:23 | - | William Koehl v Michael Fuchs | W | 3-0 | |
| TT Star Series | 07/10 08:24 | - | William Koehl v Oleh Rehotun | W | 3-1 | |
| TT Star Series | 07/10 07:30 | - | William Koehl v Jakub Goldir | W | 3-2 | |
| TT Star Series | 07/09 12:00 | - | Benjamin Fruchart v William Koehl | L | 3-1 | |
| TT Star Series | 07/09 10:00 | - | Nazar Tretiak v William Koehl | L | 3-0 | |
| TT Star Series | 07/09 08:30 | - |
William Koehl v
Ondrej Kveton
|
L | 1-3 | |
| TT Star Series | 07/09 07:00 | - | William Koehl v Aleksi Rasanen | W | 3-2 | |
| TT Star Series | 07/08 12:30 | - | Benjamin Fruchart v William Koehl | L | 3-1 | |
| TT Star Series | 07/08 11:30 | - |
Ondrej Kveton
v
William Koehl |
W | 1-3 | |
| TT Star Series | 07/08 10:19 | - | William Koehl v Nazar Tretiak | L | 1-3 |