| Challenger - Ochsenhausen | 2021/07/09 10:30 | Andriy Sitak v Evgueni Chtchetinine | W | 3-0 |
| Challenger - Ochsenhausen | 2021/07/09 07:50 | Andriy Sitak v Snehit Suravajjula | L | 0-3 |
| Challenger - Ochsenhausen | 2021/07/08 11:50 | Andriy Sitak v Dwain Schwarzer | W | 3-0 |
| Challenger - Ochsenhausen | 2021/07/08 08:30 | Andriy Sitak v Sven Happek | W | 3-2 |
| Challenger - Ochsenhausen | 2021/07/07 11:50 | Andriy Sitak v Jeet Chandra | L | 1-3 |
| Challenger - Ochsenhausen | 2021/07/07 10:10 | Andriy Sitak v Fedor Kuzmin | L | 1-3 |
| Challenger - Ochsenhausen | 2021/07/07 08:30 | Andriy Sitak v Valerij Rakov | L | 0-3 |
| TT Cup Ucraina | 2021/06/11 22:15 | Andriy Sitak v Vitaliy Lyevshin | L | 0-3 |
| TT Star Series | 2021/08/10 12:55 | Jiri Vrablik v Daniel Kosiba | L | 3-0 |
| TT Star Series | 2021/08/10 12:45 | Tomas Tregler v Daniel Kosiba | L | 3-2 |
| TT Star Series | 2021/08/10 10:15 | Josef Braun v Daniel Kosiba | L | 3-2 |
| TT Star Series | 2021/08/10 08:45 | Ondrej Kveton v Daniel Kosiba | W | 2-3 |
| TT Star Series | 2021/08/10 07:10 | Daniel Kosiba v Tomas Tregler | L | 1-3 |
| TT Star Series | 2021/08/09 13:15 | Daniel Kosiba v David Prusa | W | 3-1 |
| TT Star Series | 2021/08/09 11:45 | Jiri Vrablik v Daniel Kosiba | W | 2-3 |
| TT Star Series | 2021/08/09 09:45 | Tomas Konecny v Daniel Kosiba | L | 3-1 |