| TT Cup Ukraine | 2021/06/28 00:45 | Oleksandr Kostiuk v Samvel Melkumian | W | 2-3 |
| TT Cup Ukraine | 2021/06/21 08:05 | Samvel Melkumian v Oleksandr Kostiuk | L | 0-3 |
| 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 | 2021/06/28 02:15 | Samvel Melkumian v Bogdan Stasiuk | W | 3-1 |
| TT Cup Ukraine | 2021/06/28 00:45 | Oleksandr Kostiuk v Samvel Melkumian | W | 2-3 |
| TT Cup Ukraine | 2021/06/28 00:15 | Samvel Melkumian v Roman Vashchuk | L | 2-3 |
| TT Cup Ukraine | 2021/06/27 22:15 | Samvel Melkumian v Volodymyr Tuchkevych | W | 3-2 |
| TT Cup Ukraine | 2021/06/27 20:45 | Samvel Melkumian v Bogdan Stasiuk | W | 3-1 |
| TT Cup Ukraine | 2021/06/21 11:35 | Sergey Gilitukha v Samvel Melkumian | L | 3-0 |
| TT Cup Ukraine | 2021/06/21 10:25 | Samvel Melkumian v Andrey Tsikhotskiy | L | 2-3 |
| TT Cup Ukraine | 2021/06/21 09:15 | Samvel Melkumian v Bogdan Stasiuk | W | 3-2 |
| TT Cup Ukraine | 2021/07/02 19:10 | Bogdan Stasiuk v Oleksandr Kostiuk | W | 1-3 |
| TT Cup Ukraine | 2021/07/02 18:35 | Oleksandr Kostiuk v Bogdan Stasiuk | L | 1-3 |
| TT Cup Ukraine | 2021/07/02 17:25 | Andrey Kaptanovsky v Oleksandr Kostiuk | L | 3-0 |
| TT Cup Ukraine | 2021/07/02 15:40 | Illya Semeniuk v Oleksandr Kostiuk | L | 3-1 |
| TT Cup Ukraine | 2021/07/02 13:55 | Andrey Tsikhotskiy v Oleksandr Kostiuk | W | 1-3 |
| TT Cup Ukraine | 2021/06/30 02:15 | Bogdan Stasiuk v Oleksandr Kostiuk | W | 2-3 |
| TT Cup Ukraine | 2021/06/29 23:45 | Roman Vashchuk v Oleksandr Kostiuk | W | 1-3 |
| TT Cup Ukraine | 2021/06/29 23:15 | Oleksandr Kostiuk v Volodymyr Tuchkevych | W | 3-1 |