| Challenger - Ochsenhausen | 2018/12/03 18:20 | Jakub Kosowski v Niagol Stoyanov | L | 2-3 |
| Challenger - Ochsenhausen | 2018/01/05 13:05 | Niagol Stoyanov v Jakub Kosowski | W | 1-3 |
| Challenger - Ochsenhausen | 2018/01/03 08:10 | Jakub Kosowski v Niagol Stoyanov | L | 2-3 |
| Challenger - Ochsenhausen | 2018/12/04 12:00 | Jakub Kosowski v Miguel Vilchez | W | 3-0 |
| Challenger - Ochsenhausen | 2018/12/04 08:40 | Jakub Kosowski v Lehel Demeter | W | 3-0 |
| Challenger - Ochsenhausen | 2018/12/03 19:40 | Jakub Kosowski v Harmeet Desai | W | 3-2 |
| Challenger - Ochsenhausen | 2018/12/03 18:20 | Jakub Kosowski v Niagol Stoyanov | L | 2-3 |
| Challenger - Ochsenhausen | 2018/12/03 12:50 | Jakub Kosowski v Josip Huzjak | W | 3-1 |
| Challenger - Ochsenhausen | 2018/12/03 10:10 | Jakub Kosowski v Mateusz Golebiowski | L | 2-3 |
| Challenger - Ochsenhausen | 2018/12/03 07:30 | Jakub Kosowski v Robert Floras | W | 3-1 |
| Challenger - Ochsenhausen | 2018/11/23 13:50 | Yannick Vostes v Jakub Kosowski | L | 3-2 |
| Challenger - Ochsenhausen | 2018/12/04 11:20 | Josip Huzjak v Niagol Stoyanov | W | 0-3 |
| Challenger - Ochsenhausen | 2018/12/04 09:20 | Niagol Stoyanov v Robert Floras | W | 3-1 |
| Challenger - Ochsenhausen | 2018/12/03 21:00 | Mateusz Golebiowski v Niagol Stoyanov | L | 3-0 |
| Challenger - Ochsenhausen | 2018/12/03 18:20 | Jakub Kosowski v Niagol Stoyanov | W | 2-3 |
| Challenger - Ochsenhausen | 2018/12/03 15:40 | Niagol Stoyanov v Miguel Vilchez | W | 3-0 |
| Challenger - Ochsenhausen | 2018/12/03 11:30 | Niagol Stoyanov v Lehel Demeter | W | 3-0 |
| Challenger - Ochsenhausen | 2018/12/03 09:30 | Niagol Stoyanov v Harmeet Desai | L | 2-3 |
| Qatar - Open - Feminin | 2018/11/08 15:20 | Zhendong Fan v Niagol Stoyanov | L | 4-1 |