| Challenger - Ochsenhausen | 2018/01/04 07:30 | Andriy Sitak v Michal Benes | L | 1-3 |
| Challenger - Ochsenhausen | 2018/01/03 12:10 | Andriy Sitak v Michal Bankosz | W | 3-1 |
| Challenger - Ochsenhausen | 2018/01/03 09:30 | Josip Huzjak v Andriy Sitak | W | 0-3 |
| Challenger - Ochsenhausen | 2017/09/26 09:00 | Hermann Muhlbach v Andriy Sitak | L | 3-0 |
| Challenger - Ochsenhausen | 2017/09/26 07:00 | Yannick Vostes v Andriy Sitak | L | 3-0 |
| Challenger - Ochsenhausen | 2017/09/25 18:40 | Bohumil Vozicky v Andriy Sitak | L | 3-2 |
| Challenger - Ochsenhausen | 2017/09/25 16:40 | Andriy Sitak v Carlos Arcila | W | 3-0 |
| Challenger - Ochsenhausen | 2017/09/25 14:00 | Andriy Sitak v Diogo Chen | W | 3-0 |
| Challenger - Ochsenhausen | 2018/01/03 14:10 | Josip Huzjak v Niagol Stoyanov | L | 3-0 |
| Challenger - Ochsenhausen | 2018/01/03 10:50 | Jiri Vrablik v Niagol Stoyanov | W | 2-3 |
| Challenger - Ochsenhausen | 2018/01/03 08:10 | Jakub Kosowski v Niagol Stoyanov | W | 2-3 |
| Qatar Open - Kvinder | 2017/12/20 18:55 | Niagol Stoyanov v Pavel Sirucek | W | 3-1 |
| Qatar Open - Kvinder | 2017/12/01 13:59 | Dimitrij Ovtcharov v Niagol Stoyanov | L | 3-2 |
| Qatar Open - Kvinder | 2017/12/01 12:45 | Jun Mizutani v Niagol Stoyanov | L | 3-0 |
| Qatar Open - Kvinder | 2017/11/23 20:23 | Diogo Carvalho v Niagol Stoyanov | L | 3-2 |
| Qatar Open - Kvinder | 2017/10/26 17:48 | Daniel Gorak v Niagol Stoyanov | W | 1-3 |