| TT Cup (2021) | 2021/01/26 21:10 | Samvel Melkumian v Oleksandr Kostiuk | W | 3-1 |
| TT Cup Ukraine | 2021/01/26 18:15 | Oleksandr Kostiuk v Samvel Melkumian | L | 3-0 |
| TT Cup Ukraine | 2021/01/06 11:25 | Samvel Melkumian v Oleksandr Kostiuk | W | 3-2 |
| TT Cup Ukraine | 2020/12/19 16:40 | Samvel Melkumian v Oleksandr Kostiuk | L | 1-3 |
| TT Cup Ukraine | 2020/12/15 22:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 3-2 |
| TT Cup Ukraine | 2020/12/12 18:25 | Samvel Melkumian v Oleksandr Kostiuk | L | 2-3 |
| TT Cup Ukraine | 2020/12/11 14:20 | Oleksandr Kostiuk v Samvel Melkumian | W | 2-3 |
| TT Cup Ukraine | 2020/12/09 01:15 | Samvel Melkumian v Oleksandr Kostiuk | L | 2-3 |
| TT Cup Ukraine | 2021/06/21 06:55 | Samvel Melkumian v Sergey Gilitukha | L | 1-3 |
| TT Cup Ukraine | 2021/06/16 02:05 | Anatoliy Chaplyanka v Samvel Melkumian | L | 3-0 |
| TT Cup Ukraine | 2021/06/15 23:35 | Oleksandr Yarovoi v Samvel Melkumian | W | 0-3 |
| TT Cup Ukraine | 2021/06/15 23:05 | Samvel Melkumian v Sergey Gilitukha | W | 3-0 |
| TT Cup Ukraine | 2021/06/15 22:05 | Anatoliy Chaplyanka v Samvel Melkumian | L | 3-1 |
| TT Cup Ukraine | 2021/06/15 21:05 | Samvel Melkumian v Ivan Fashchevskyi | W | 3-2 |
| TT Cup Ukraine | 2021/06/15 02:05 | Samvel Melkumian v Ivan Fashchevskyi | L | 2-3 |
| TT Cup Ukraine | 2021/06/15 01:05 | Samvel Melkumian v Sergey Gilitukha | L | 2-3 |
| TT Cup Ukraine | 2021/06/21 06:20 | Bogdan Stasiuk v Oleksandr Kostiuk | L | 3-0 |
| TT Cup Ukraine | 2021/06/18 23:45 | Sergey Gilitukha v Oleksandr Kostiuk | L | 3-0 |
| TT Cup Ukraine | 2021/06/18 23:15 | Oleksandr Kostiuk v Andrey Tsikhotskiy | L | 0-3 |
| TT Cup Ukraine | 2021/06/18 22:15 | Bogdan Stasiuk v Oleksandr Kostiuk | L | 3-0 |
| TT Cup Ukraine | 2021/06/18 21:15 | Oleksandr Kostiuk v Mykola Tovkach | L | 1-3 |
| TT Cup Ukraine | 2021/06/16 12:10 | Roman Vashchuk v Oleksandr Kostiuk | W | 0-3 |
| TT Cup Ukraine | 2021/06/16 11:35 | Oleksandr Kostiuk v Maksym Mykytiuk | L | 0-3 |
| TT Cup Ukraine | 2021/06/16 09:50 | Oleksandr Kostiuk v Bogdan Stasiuk | L | 0-3 |