| TT Star Series | - | Stefan Kostadinovic vs Matej Stach | - | 2-1 |
| TT Star Series | 06/01 15:30 | - | Stefan Kostadinovic v David Prusa | L | 0-3 | |
| TT Star Series | 05/31 18:30 | - | Martin Koblizek v Stefan Kostadinovic | L | 3-0 | |
| TT Star Series | 05/31 17:03 | - | Jakub Kaucky v Stefan Kostadinovic | L | 3-1 | |
| TT Star Series | 05/31 15:25 | - | Stefan Kostadinovic v Amirreza Abbasi | L | 2-3 | |
| TT Star Series | 05/18 19:30 | - | Stefan Kostadinovic v Miroslav Horejsi | W | 3-2 | |
| TT Star Series | 05/18 17:08 | - | Stefan Kostadinovic v David Prusa | L | 2-3 | |
| TT Star Series | 05/18 16:00 | - | Stefan Kostadinovic v Miroslav Horejsi | W | 3-2 | |
| TT Star Series | 05/18 13:01 | - | Stefan Kostadinovic v David Reitspies | L | 0-3 | |
| TT Star Series | 05/17 18:51 | - | Stefan Kostadinovic v Tomas Koldas | W | 3-0 | |
| TT Star Series | 05/17 16:00 | - | Jiri Vrablik v Stefan Kostadinovic | W | 1-3 | |
| TT Star Series | 05/17 14:30 | - | Stefan Kostadinovic v Akito Itagaki | W | 3-0 | |
| TT Star Series | 04/23 10:00 | - | Akito Itagaki v Stefan Kostadinovic | L | 3-0 |