| TT Cup Ukraine | 2021/09/06 08:05 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| TT Cup Ukraine | 2021/08/25 09:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| TT Cup Ukraine | 2021/07/06 10:25 | Samvel Melkumian v Oleksandr Kostiuk | W | 0-3 |
| TT Cup Ukraine | 2021/06/28 00:45 | Oleksandr Kostiuk v Samvel Melkumian | L | 2-3 |
| TT Cup Ukraine | 2021/06/21 08:05 | Samvel Melkumian v Oleksandr Kostiuk | W | 0-3 |
| TT Cup (2021) | 2021/01/26 21:10 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| TT Cup Ukraine | 2021/01/26 18:15 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-0 |
| TT Cup Ukraine | 2021/01/06 11:25 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-2 |
| TT Cup Ukraine | 2021/09/07 07:30 | Oleksandr Kostiuk v Andrey Kaptanovsky | W | 3-1 |
| TT Cup Ukraine | 2021/09/07 05:45 | Oleksandr Kostiuk v Igor Vatsyn | W | 3-0 |
| TT Cup Ukraine | 2021/09/06 11:35 | Oleksandr Kostiuk v Volodymyr Tuchkevych | L | 1-3 |
| TT Cup Ukraine | 2021/09/06 11:00 | Oleksandr Kostiuk v Volodymyr Tuchkevych | W | 3-1 |
| TT Cup Ukraine | 2021/09/06 09:50 | Andrey Kaptanovsky v Oleksandr Kostiuk | W | 2-3 |
| TT Cup Ukraine | 2021/09/06 08:05 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| TT Cup Ukraine | 2021/09/06 06:20 | Andrey Tsikhotskiy v Oleksandr Kostiuk | L | 3-1 |
| TT Cup Ukraine | 2021/08/30 11:00 | Volodymyr Tuchkevych v Oleksandr Kostiuk | L | 3-0 |
| TT Cup Ukraine | 2021/09/07 08:05 | Andrey Tsikhotskiy v Samvel Melkumian | W | 1-3 |
| TT Cup Ukraine | 2021/09/07 06:20 | Andrey Kaptanovsky v Samvel Melkumian | L | 3-2 |
| TT Cup Ukraine | 2021/09/06 12:10 | Andrey Tsikhotskiy v Samvel Melkumian | W | 2-3 |
| TT Cup Ukraine | 2021/09/06 10:25 | Samvel Melkumian v Andrey Kaptanovsky | L | 0-3 |
| TT Cup Ukraine | 2021/09/06 09:15 | Samvel Melkumian v Andrey Tsikhotskiy | L | 0-3 |
| TT Cup Ukraine | 2021/09/06 08:05 | Samvel Melkumian v Oleksandr Kostiuk | W | 3-1 |
| TT Cup Ukraine | 2021/09/06 06:55 | Samvel Melkumian v Volodymyr Tuchkevych | W | 3-1 |
| TT Cup Ukraine | 2021/08/28 02:15 | Samvel Melkumian v Volodymyr Tuchkevych | W | 3-1 |