| TT Cup | 2021/01/06 11:25 | Melkumyan, Samvel v Kostiuk, Oleksandr | L | 3-2 |
| TT Cup | 2020/12/19 16:40 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 1-3 |
| TT Cup | 2020/12/15 22:15 | Melkumyan, Samvel v Kostiuk, Oleksandr | L | 3-2 |
| TT Cup | 2020/12/12 18:25 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2020/12/11 14:20 | Kostiuk, Oleksandr v Melkumyan, Samvel | L | 2-3 |
| TT Cup | 2020/12/09 01:15 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2020/12/05 17:50 | Melkumyan, Samvel v Kostiuk, Oleksandr | W | 1-3 |
| TT Cup | 2020/12/04 16:40 | Kostiuk, Oleksandr v Melkumyan, Samvel | W | 3-1 |
| TT Cup | 2021/01/26 17:05 | Vitaliy Pinchuk v Kostiuk, Oleksandr | L | 3-2 |
| TT Cup | 2021/01/26 15:55 | Kostiuk, Oleksandr v Matsehora, Ihor | L | 0-3 |
| TT Cup | 2021/01/25 19:00 | Vitaliy Pinchuk v Kostiuk, Oleksandr | L | 3-2 |
| TT Cup | 2021/01/25 18:25 | Kostiuk, Oleksandr v Dygalevych, Dmytro | L | 1-3 |
| TT Cup | 2021/01/25 16:05 | Kostiuk, Oleksandr v Tovkach, Mykola | L | 1-3 |
| TT Cup | 2021/01/25 14:20 | Kostiuk, Oleksandr v Tuchkevych, Volodymyr | W | 3-2 |
| TT Cup | 2021/01/23 20:10 | Tsykhotskiy, Andrey v Kostiuk, Oleksandr | W | 2-3 |
| TT Cup | 2021/01/23 19:00 | Kostiuk, Oleksandr v Tuchkevych, Volodymyr | W | 3-0 |
| TT Cup | 2021/01/26 16:30 | Tuchkevych, Volodymyr v Melkumyan, Samvel | L | 3-1 |
| TT Cup | 2021/01/26 15:20 | Vitaliy Pinchuk v Melkumyan, Samvel | W | 1-3 |
| TT Cup | 2021/01/20 17:50 | Matsehora, Ihor v Melkumyan, Samvel | L | 3-2 |
| TT Cup | 2021/01/20 17:15 | Melkumyan, Samvel v Demchuk, Igor | W | 3-1 |
| TT Cup | 2021/01/20 16:05 | Bosak, Viktor v Melkumyan, Samvel | L | 3-0 |
| TT Cup | 2021/01/20 14:55 | Melkumyan, Samvel v Krysak, Andrey | L | 0-3 |
| TT Cup | 2021/01/13 19:00 | Melkumyan, Samvel v Bohdan, Zdrobylko | L | 1-3 |
| TT Cup | 2021/01/13 17:50 | Melkumyan, Samvel v Demchuk, Igor | L | 0-3 |