| TT Star Series | 2020/11/23 08:10 | Andriy Sitak v Jakub Seibert | L | 3-1 |
| TT Star Series | 2020/11/20 09:15 | Andriy Sitak v Jakub Seibert | L | 3-2 |
| TT Star Series | 2020/11/17 07:00 | Andriy Sitak v Jakub Seibert | L | 3-2 |
| TT Star Series | 2020/11/15 07:00 | Jakub Seibert v Andriy Sitak | W | 3-0 |
| Czech TT Star Series | 2020/10/29 09:15 | Jakub Seibert v Andriy Sitak | W | 3-2 |
| Czech TT Star Series | 2020/08/31 13:15 | Jakub Seibert v Andriy Sitak | W | 3-1 |
| Czech TT Star Series | 2020/08/31 09:30 | Jakub Seibert v Andriy Sitak | W | 3-1 |
| TT Star Series | 2021/08/19 11:45 | Oleksandr Tymofieiev v Jakub Seibert | L | 3-1 |
| TT Star Series | 2021/08/19 09:45 | Patrik Klos v Jakub Seibert | L | 3-0 |
| TT Star Series | 2021/08/19 07:10 | Miroslav Sklensky v Jakub Seibert | L | 3-0 |
| TT Star Series | 2021/08/06 11:45 | Jakub Seibert v Jakub Folwarski | L | 1-3 |
| TT Star Series | 2021/08/06 08:45 | Jakub Seibert v Antonin Gavlas | W | 3-2 |
| TT Star Series | 2021/08/06 06:35 | Jakub Seibert v Jakub Kaucky | W | 3-1 |
| TT Star Series | 2021/08/05 12:45 | Jakub Seibert v Romain Ruiz | L | 0-3 |
| TT Star Series | 2021/08/05 10:15 | Jakub Seibert v Jiri Martinko | L | 0-3 |
| TT Star Series | 2021/08/19 10:45 | Enio Mendes v Andriy Sitak | L | 3-0 |
| TT Star Series | 2021/08/19 09:15 | Oleksandr Tymofieiev v Andriy Sitak | L | 3-1 |
| TT Star Series | 2021/08/19 06:00 | Krystof Prida v Andriy Sitak | W | 0-3 |
| TT Star Series | 2021/08/13 11:15 | Andriy Sitak v Vladimir Anca | W | 3-2 |
| TT Star Series | 2021/08/13 09:15 | Antonin Gavlas v Andriy Sitak | L | 3-2 |
| TT Star Series | 2021/08/13 06:00 | Petr David v Andriy Sitak | L | 3-1 |
| TT Star Series | 2021/08/12 12:45 | Patrik Klos v Andriy Sitak | L | 3-0 |
| TT Star Series | 2021/08/12 11:15 | Andriy Sitak v Jan Valenta | L | 0-3 |