Head to Head
| 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 |
| 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 |