| WTT Feeder Biella | 2023/12/15 14:00 | Niagol Stoyanov v Panagiotis Gionis | L | 2-3 |
| Swedish Open | 2014/11/14 13:00 | Niagol Stoyanov v Panagiotis Gionis | L | 1-4 |
| European Olympic Qualification | 2024/05/16 13:20 | Niagol Stoyanov v Daniels Kogans | W | 4-1 |
| European Olympic Qualification | 2024/05/15 17:30 | Paul Drinkhall v Niagol Stoyanov | L | 4-2 |
| European Olympic Qualification | 2024/05/15 10:00 | Niagol Stoyanov v Elias Hardmeier | W | 4-0 |
| WTT Saudi Smash Quals | 2024/05/02 11:00 | Jakub Dyjas v Niagol Stoyanov | L | 3-0 |
| WTT Feeder Havirov | 2024/04/15 11:25 | Seongil Jang v Niagol Stoyanov | L | 3-1 |
| WTT Feeder Varazdin | 2024/04/05 17:05 | Niagol Stoyanov v Kristian Karlsson | L | 1-3 |
| WTT Feeder Varazdin | 2024/04/05 11:30 | Niagol Stoyanov v Baldwin Chan | W | 3-1 |
| WTT Feeder Varazdin | 2024/04/04 09:10 | Andrej Gacina v Niagol Stoyanov | W | 2-3 |
| European Olympic Qualification | 2024/05/16 13:20 | Panagiotis Gionis v Alexander Gillen | W | 4-0 |
| European Olympic Qualification | 2024/05/15 16:40 | Panagiotis Gionis v Cedric Nuytinck | W | 4-1 |
| European Olympic Qualification | 2024/05/15 09:10 | Panagiotis Gionis v Abdullah Yigenler | W | 4-0 |
| WTT Saudi Smash Quals | 2024/05/02 15:15 | Alvaro Robles v Panagiotis Gionis | L | 3-2 |
| WTT Saudi Smash Quals | 2024/05/01 11:00 | Panagiotis Gionis v Cheng-Ting Liao | W | 3-1 |
| Europe Cup | 2024/04/27 16:10 | Kaii Konishi v Panagiotis Gionis | L | 3-0 |
| Europe Cup | 2024/04/27 16:00 | Konishi Kaii v Panagiotis Gionis | L | 3-0 |
| Europe Cup | 2024/04/25 18:20 | Panagiotis Gionis v Jakub Dyjas | L | 2-3 |