| Challenger - Series TT | 02/03 08:50 | - | Kenan Hrnic v Nikola Grujic | L | 3-1 | |
| Challenger - Series TT | 02/02 20:50 | - | Damian Zech v Nikola Grujic | W | 1-3 | |
| Challenger - Series TT | 02/02 18:50 | - | Dennis Klein v Nikola Grujic | L | 3-0 | |
| Challenger - Series TT | 02/02 16:50 | - | Nikola Grujic v Anton Limonov | L | 1-3 | |
| Challenger - Series TT | 02/02 14:10 | - | Nikola Grujic v Dillon Chambers | L | 0-3 | |
| Challenger - Series TT | 02/02 12:10 | - | Nikola Grujic v Kirill Fadeev | L | 1-3 | |
| Challenger - Series TT | 02/02 09:30 | - | Hannes Hormann v Nikola Grujic | W | 2-3 | |
| Challenger - Series TT | 01/31 11:30 | - | Makoto Nogami v Nikola Grujic | L | 3-2 | |
| Challenger - Series TT | 01/31 07:30 | - | Florian Bluhm v Nikola Grujic | L | 3-0 | |
| Challenger - Series TT | 01/30 19:30 | - | Nikola Grujic v Guilherme Teodoro | L | 1-3 | |
| Challenger - Series TT | 01/30 16:10 | - | Nikola Grujic v Samuel Amann | W | 3-0 | |
| Challenger - Series TT | 01/30 14:10 | - | Josip Huzjak v Nikola Grujic | L | 3-1 |