| Challenger Series TT | 2023/01/30 14:10 | Josip Huzjak v Nikola Grujic | L | 3-1 |
| Challenger Series TT | 2023/01/30 11:30 | Albert Vilardell v Nikola Grujic | L | 3-0 |
| Challenger Series TT | 2023/01/30 08:50 | Damian Zech v Nikola Grujic | W | 0-3 |
| Challenger Series TT | 2022/12/16 10:50 | Nikola Grujic v Peter Hribar | L | 1-3 |
| Challenger Series TT | 2022/12/16 08:50 | Nikola Grujic v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2022/12/15 20:10 | Nikola Grujic v Josip Huzjak | L | 1-3 |
| Challenger Series TT | 2022/12/15 15:30 | Nikola Grujic v Sven Happek | W | 3-0 |
| Challenger Series TT | 2022/12/15 13:30 | Nikola Grujic v Marius Henninger | L | 0-3 |
| Challenger Series TT | 2023/01/30 13:30 | Makoto Nogami v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 12:10 | Josip Huzjak v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 07:30 | Florian Bluhm v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/06 10:10 | Kirill Fadeev v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/06 08:10 | Samuel Amann v Marius Henninger | L | 0-3 |
| Challenger Series TT | 2023/01/05 20:10 | David Kumpel v Samuel Amann | W | 2-3 |
| Challenger Series TT | 2023/01/05 17:30 | Daniel Rinderer v Samuel Amann | L | 3-1 |
| Challenger Series TT | 2023/01/05 14:50 | Samuel Amann v Salim Karam | W | 3-0 |