| Challenger - Ochsenhausen | 09/21 09:10 | 1 | Niagol Stoyanov v Daniel Gorak | L | 1-3 | |
| Challenger - Ochsenhausen | 09/21 06:30 | 1 | Niagol Stoyanov v Mihai Bobocica | L | 1-3 | |
| Portugal Open | 02/14 20:00 | 5 | Niagol Stoyanov v Paul Drinkhall | L | 0-4 | |
| Portugal Open | 02/14 14:50 | 6 | Niagol Stoyanov v Nandor Ecseki | W | 4-1 | |
| Spanish Open | 02/06 14:55 | 6 | Niagol Stoyanov v Jules Rolland | L | 3-4 | |
| German Open | 01/28 16:35 | - | Bo Fang v Niagol Stoyanov | W | 1-4 | |
| World Team Olympic Quals | 01/23 20:30 | - | Niagol Stoyanov v Martin Allegro | L | 2-3 | |
| 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 | |
| Frankrig - League Pro A | 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 | |
| European Games | 06/23 15:00 | - | Vladimir Samsonov v Niagol Stoyanov | L | 4-3 | |
| European Games | 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 - Mixdouble | 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 |