| TT Star Series | 04/23 10:00 | - | Akito Itagaki v Stefan Kostadinovic | L | 3-0 | |
| TT Star Series | 04/23 08:30 | - | Adam Klajber v Stefan Kostadinovic | L | 3-1 | |
| TT Star Series | 04/23 07:00 | - | Stefan Kostadinovic v Tibor Spanik | L | 1-3 | |
| TT Star Series | 04/22 13:00 | - | Stefan Kostadinovic v Mohammed Javad Sohrabi | L | 1-3 | |
| TT Star Series | 04/22 11:30 | - | Jakub Zelinka v Stefan Kostadinovic | L | 3-2 | |
| TT Star Series | 04/22 09:30 | - | Jiri Vrablik v Stefan Kostadinovic | W | 2-3 | |
| TT Star Series | 04/22 07:00 | - | Miroslav Horejsi v Stefan Kostadinovic | L | 3-0 | |
| TT Star Series | 04/20 16:39 | - | Stefan Kostadinovic v Nazar Tretiak | L | 2-3 | |
| TT Star Series | 04/20 15:41 | - | Stefan Kostadinovic v Miroslav Horejsi | L | 1-3 | |
| TT Star Series | 04/20 15:30 | - | Stefan Kostadinovic v Antonin Gavlas | L |
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| TT Star Series | 04/19 18:06 | - | Martin Pytlik v Stefan Kostadinovic | W | 0-3 | |
| TT Star Series | 04/19 16:20 | - | Daniel Rinderer v Stefan Kostadinovic | L | 3-1 |