| TT Cup | 2021/10/26 09:15 | Kostiuk, Oleksandr v Demchuk, Igor | W | 3-0 |
| TT Cup | 2021/10/26 05:45 | Demchuk, Igor v Kostiuk, Oleksandr | W | 0-3 |
| TT Cup | 2021/06/23 23:45 | Kostiuk, Oleksandr v Demchuk, Igor | L | 2-3 |
| TT Cup | 2021/06/23 20:45 | Demchuk, Igor v Kostiuk, Oleksandr | W | 0-3 |
| TT Cup | 2021/05/25 00:15 | Kostiuk, Oleksandr v Demchuk, Igor | L | 1-3 |
| TT Cup | 2021/10/26 11:00 | Roman Vashchuk v Kostiuk, Oleksandr | W | 0-3 |
| TT Cup | 2021/10/26 09:50 | Melkumyan, Samvel v Kostiuk, Oleksandr | L | 3-2 |
| TT Cup | 2021/10/26 09:15 | Kostiuk, Oleksandr v Demchuk, Igor | W | 3-0 |
| TT Cup | 2021/10/26 08:05 | Roman Vashchuk v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2021/10/26 06:55 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2021/10/26 05:45 | Demchuk, Igor v Kostiuk, Oleksandr | W | 0-3 |
| TT Cup | 2021/10/25 11:35 | Tuchkevych, Volodymyr v Kostiuk, Oleksandr | L | 3-1 |
| TT Cup | 2021/10/25 10:25 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2021/10/26 11:35 | Melkumyan, Samvel v Demchuk, Igor | W | 1-3 |
| TT Cup | 2021/10/26 10:25 | Roman Vashchuk v Demchuk, Igor | L | 3-0 |
| TT Cup | 2021/10/26 09:15 | Kostiuk, Oleksandr v Demchuk, Igor | L | 3-0 |
| TT Cup | 2021/10/26 07:30 | Melkumyan, Samvel v Demchuk, Igor | L | 3-1 |
| TT Cup | 2021/10/26 06:20 | Roman Vashchuk v Demchuk, Igor | L | 3-0 |
| TT Cup | 2021/10/26 05:45 | Demchuk, Igor v Kostiuk, Oleksandr | L | 0-3 |
| TT Cup | 2021/10/23 19:10 | Demchuk, Igor v Vatsin, Igor | W | 3-0 |
| TT Cup | 2021/10/23 18:00 | Demchuk, Igor v Roman Vashchuk | L | 0-3 |