| World Team Olympic Quals | 01/23 19:30 | - | Niagol Stoyanov v Cedric Nuytinck | L | 0-3 | |
| World Team Olympic Quals | 01/22 10:30 | - | Niagol Stoyanov v Qi Shen Wong | W | 3-0 | |
| Francia Pro A liga | 10/20 14:23 | - | Alexandre Cassin v Niagol Stoyanov | L | 3-2 | |
| Swedish Open | 10/01 15:00 | - | An Yan v Niagol Stoyanov | L | 4-0 | |
| Paraguay Open | 09/13 18:05 | - | Hunor Szocs v Niagol Stoyanov | L | 4-2 | |
| Korea Open | 07/03 09:00 | - | Niagol Stoyanov v Chenhao Xu | L | 1-4 | |
| Európa Játékok | 06/23 15:00 | - | Vladimir Samsonov v Niagol Stoyanov | L | 4-3 | |
| Európa Játékok | 06/22 14:00 | - | Niagol Stoyanov v Florent Lambiet | W | 4-0 | |
| Hong Kong Open | 06/04 02:40 | 1 | Aleksandar Karakasevic v Niagol Stoyanov | W | 2-4 | |
| Euro Champs Team Quals | 05/19 09:38 | - | Niagol Stoyanov v Tom Jarvis | W | 3-0 | |
| Euro Champs Team Quals | 05/19 08:00 | - | Niagol Stoyanov v Samuel Walker | W | 3-0 | |
| Euro Champs Team Quals | 05/18 17:20 | - | Yaroslav Zhmudenko v Niagol Stoyanov | L | 3-1 | |
| Euro Champs Team Quals | 05/18 11:47 | - | Niagol Stoyanov v Aleksandr Smirnov | W | 3-0 | |
| World Championship | 04/23 13:00 | 57 | Niagol Stoyanov v Marcos Madrid | L | 2-4 | |
| Qatar Open - vegyes páros | 01/15 16:45 | - | Niagol Stoyanov v Aleksandar Karakasevic | W | 4-0 | |
| Challenger Ochsenhausen | 12/04 15:00 | 1 | Harmeet Desai v Niagol Stoyanov | W | 2-3 | |
| Challenger Ochsenhausen | 12/04 14:15 | 1 | Jakub Kosowski v Niagol Stoyanov | W | 0-3 | |
| Challenger Ochsenhausen | 12/04 11:20 | 1 | Josip Huzjak v Niagol Stoyanov | W | 0-3 | |
| Challenger Ochsenhausen | 12/04 09:20 | 1 | Niagol Stoyanov v Robert Floras | W | 3-1 | |
| Challenger Ochsenhausen | 12/03 21:00 | 1 | Mateusz Golebiowski v Niagol Stoyanov | L | 3-0 | |
| Challenger Ochsenhausen | 12/03 18:20 | 1 | Jakub Kosowski v Niagol Stoyanov | W | 2-3 | |
| Challenger Ochsenhausen | 12/03 15:40 | 1 | Niagol Stoyanov v Miguel Vilchez | W | 3-0 | |
| Challenger Ochsenhausen | 12/03 11:30 | 1 | Niagol Stoyanov v Lehel Demeter | W | 3-0 | |
| Challenger Ochsenhausen | 12/03 09:30 | 1 | Niagol Stoyanov v Harmeet Desai | L | 2-3 | |
| Qatar Open - nők | 11/08 15:20 | 5 | Zhendong Fan v Niagol Stoyanov | L | 4-1 | |
| Qatar Open - nők | 09/20 17:50 | 6 | Lei Kou v Niagol Stoyanov | L | 4-0 | |
| Qatar Open - vegyes páros | 09/19 13:05 | 1 | Niagol Stoyanov v Marek Badowski | L | 3-4 | |
| Qatar Open - vegyes páros | 08/15 07:10 | - | Niagol Stoyanov v Yuki Matsuyama | W | 4-1 | |
| Qatar Open - vegyes páros | 05/29 02:50 | 1 | Niagol Stoyanov v Bo Fang | L | 2-4 | |
| Qatar Open - vegyes páros | 05/23 02:40 | 1 | Niagol Stoyanov v Jike Zhang | L | 2-4 |