| Challenger Series TT | 07/11 09:50 | - | Johannes Willeke v Benjamin Fruchart | L | 0-3 | |
| Challenger Series TT | 07/11 06:30 | - | Johannes Willeke v Akos Kishegyi | L | 2-3 | |
| Challenger Series TT | 07/10 17:50 | - | Johannes Willeke v Kestutis Zeimys | L | 2-3 | |
| Challenger Series TT | 07/10 16:30 | - | Johannes Willeke v Armin Alicic | L | 0-3 | |
| Challenger Series TT | 07/10 11:50 | - | Johannes Willeke v Dennis Klein | L | 1-3 | |
| Challenger Series TT | 07/10 09:10 | - | Johannes Willeke v Damian Zech | L | 1-3 | |
| Challenger Series TT | 07/10 06:30 | - | Johannes Willeke v Samuel Amann | W | 3-1 | |
| Challenger Series TT | 07/07 09:50 | - | Johannes Willeke v David Reitspies | L | 0-3 | |
| Challenger Series TT | 07/07 06:30 | - | Johannes Willeke v Dauud Cheaib | L | 0-3 | |
| Challenger Series TT | 07/06 17:50 | - | Johannes Willeke v Benjamin Fruchart | L | 0-3 | |
| Challenger Series TT | 07/06 16:30 | - | Johannes Willeke v Mathias Golab | W | 3-0 | |
| Challenger Series TT | 07/06 11:50 | - | Johannes Willeke v Dennis Klein | L | 0-3 | |
| Challenger Series TT | 07/06 09:10 | - | Johannes Willeke v Hannes Hormann | L | 2-3 | |
| Challenger Series TT | 07/06 06:30 | - | Johannes Willeke v Liang Qiu | W | 3-2 | |
| Challenger Series TT | 06/23 08:30 | - | Samuel Amann v Johannes Willeke | W | 0-3 | |
| Challenger Series TT | 06/23 08:30 | - | Damian Zech v Johannes Willeke | - | Cancelled | |
| Challenger Series TT | 06/23 07:10 | - |
Carlo Rossi
v
Johannes Willeke |
L | 3-0 | |
| Challenger Series TT | 06/23 07:10 | - | Enio Mendes v Johannes Willeke | - | Cancelled | |
| Challenger Series TT | 06/22 17:10 | - | Sven Happek v Johannes Willeke | W | 2-3 | |
| Challenger Series TT | 06/22 15:10 | - | Ihor Zavadskyi v Johannes Willeke | L | 3-1 | |
| Challenger Series TT | 06/22 15:10 | - | Zengyi Wang v Johannes Willeke | - | Cancelled | |
| Challenger Series TT | 06/22 12:30 | - | Dennis Klein v Johannes Willeke | L | 3-0 | |
| Challenger Series TT | 06/22 11:10 | - | Dauud Cheaib v Johannes Willeke | L | 3-0 | |
| Challenger Series TT | 06/22 06:30 | - | Tobias Slanina v Johannes Willeke | L | 3-2 | |
| Challenger Series TT | 06/20 08:30 | - | Jose Guillot v Johannes Willeke | L | 3-1 | |
| Challenger Series TT | 06/20 07:10 | - | Aljaz Godec v Johannes Willeke | L | 3-0 | |
| Challenger Series TT | 06/19 17:10 | - | Marco Stefanidis v Johannes Willeke | L | 3-0 | |
| Challenger Series TT | 06/19 15:10 | - |
Carlo Rossi
v
Johannes Willeke |
L | 3-0 | |
| Challenger Series TT | 06/19 12:30 | - | Sven Happek v Johannes Willeke | L | 3-1 | |
| Challenger Series TT | 06/19 11:10 | - | Akito Itagaki v Johannes Willeke | L | 3-1 |