| Challenger Series TT | 2022/12/12 10:50 | Nikola Grujic v Kenan Hrnic | L | 3-1 |
| Challenger Series TT | 2023/02/02 20:10 | Kenan Hrnic v Hannes Hormann | L | 0-3 |
| Challenger Series TT | 2023/02/02 15:30 | Kenan Hrnic v Damian Zech | L | 1-3 |
| Challenger Series TT | 2023/02/02 13:30 | Kenan Hrnic v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/02/02 10:10 | Dennis Klein v Kenan Hrnic | L | 3-0 |
| Challenger Series TT | 2023/02/02 08:10 | Kenan Hrnic v Anton Limonov | L | 0-3 |
| Challenger Series TT | 2023/01/17 08:50 | Andrei Putuntica v Kenan Hrnic | L | 3-0 |
| Challenger Series TT | 2023/01/17 08:10 | Amirreza Abbasi v Kenan Hrnic | L | 3-0 |
| Challenger Series TT | 2023/01/16 15:30 | Dauud Cheaib v Kenan Hrnic | L | 3-0 |
| Challenger Series TT | 2023/02/02 20:50 | Damian Zech v Nikola Grujic | W | 1-3 |
| Challenger Series TT | 2023/02/02 18:50 | Dennis Klein v Nikola Grujic | L | 3-0 |
| Challenger Series TT | 2023/02/02 16:50 | Nikola Grujic v Anton Limonov | L | 1-3 |
| Challenger Series TT | 2023/02/02 14:10 | Nikola Grujic v Dillon Chambers | L | 0-3 |
| Challenger Series TT | 2023/02/02 12:10 | Nikola Grujic v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/02/02 09:30 | Hannes Hormann v Nikola Grujic | W | 2-3 |
| Challenger Series TT | 2023/01/31 11:30 | Makoto Nogami v Nikola Grujic | L | 3-2 |
| Challenger Series TT | 2023/01/31 07:30 | Florian Bluhm v Nikola Grujic | L | 3-0 |