| WTT Contender Budapest | 2021/08/19 13:50 | Dang Qiu v Niagol Stoyanov | L | 3-0 |
| WTT Contender Budapest | 2021/08/18 13:20 | Niagol Stoyanov v Sathiyan Gnanasekaran | W | 3-1 |
| WTT Contender Budapest | 2021/08/17 16:20 | Lubomir Pistej v Niagol Stoyanov | W | 1-3 |
| European Championships | 2021/06/25 16:40 | Ovidiu Ionescu v Niagol Stoyanov | L | 4-2 |
| European Championships | 2021/06/24 17:30 | Niagol Stoyanov v Jonathan Groth | W | 4-3 |
| European Championships | 2021/06/22 07:50 | Niagol Stoyanov v Maciej Kubik | W | 3-2 |
| Olympic Qualification | 2021/04/22 15:00 | Niagol Stoyanov v Luka Mladenovic | W | 4-3 |
| Olympic Qualification | 2021/04/21 19:00 | Lubomir Pistej v Niagol Stoyanov | L | 4-0 |
| European Team Championships | 2021/08/27 11:00 | Pedro Osiro v Stanislav Strogov | L | 3-0 |
| Euro Champs Team Quals | 2019/05/19 08:40 | Yaroslav Zhmudenko v Stanislav Strogov | L | 3-0 |