| TT Star Series | 08/14 10:15 | - | Stefan Kostadinovic v Tomas Tregler | W | 3-1 | |
| TT Star Series | 08/14 08:15 | - | Stefan Kostadinovic v Amirreza Abbasi | L | 0-3 | |
| TT Star Series | 08/14 06:00 | - | Stefan Kostadinovic v Josip Huzjak | L | 1-2 | |
| TT Star Series | 01/14 11:45 | - | Stefan Kostadinovic v Frantisek Onderka | L | 2-3 | |
| TT Star Series | 01/14 10:15 | - | Stefan Kostadinovic v Radim Bako | L | 1-3 | |
| TT Star Series | 01/14 08:45 | - | Stefan Kostadinovic v Yannick Vostes | L | 1-3 | |
| TT Star Series | 01/13 13:15 | - | Josef Braun v Stefan Kostadinovic | W | 0-3 | |
| TT Star Series | 01/13 11:15 | - | Amirreza Abbasi v Stefan Kostadinovic | L | 3-2 | |
| TT Star Series | 01/13 09:45 | - | Stefan Kostadinovic v Abdel Kader Salifou | W | 3-1 | |
| Balkan Champs MS | 08/03 12:45 | - | Stefan Kostadinovic v Daniele Pinto | W | 4-1 | |
| Balkan Champs MS | 08/02 15:00 | - | Stefan Kostadinovic v Fatih Karabaxhak | W | 3-0 | |
| Balkan Champs MS | 08/02 08:55 | - | Dritan Laska v Stefan Kostadinovic | W | 0-3 | |
| Balkan Champs Team | 08/01 17:15 | - | Alexandru Manole v Stefan Kostadinovic | W | 2-3 | |
| Balkan Champs Team | 08/01 15:00 | - | Stefan Kostadinovic v Ibrahim Gunduz | L | 2-3 | |
| Balkan Champs Team | 08/01 13:00 | - | Stefan Kostadinovic v Abdullah Yigenler | L | 2-3 | |
| Balkan Champs MS | 08/01 09:15 | - | Petar Kostovski v Stefan Kostadinovic | W | 0-3 | |
| Balkan Champs Team | 07/31 18:30 | - | Filip Radulovic v Stefan Kostadinovic | W | 0-3 |