| 烏克蘭TT盃 | 2021/09/14 10:25 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2021/09/14 06:20 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| 烏克蘭TT盃 | 2021/09/13 12:10 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-0 |
| 烏克蘭TT盃 | 2021/09/13 08:40 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2021/09/09 01:15 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-0 |
| 烏克蘭TT盃 | 2021/09/08 22:45 | Oleksandr Kostiuk v Samvel Melkumian | L | 1-3 |
| 烏克蘭TT盃 | 2021/09/07 09:50 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-2 |
| 烏克蘭TT盃 | 2021/09/06 08:05 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| 烏克蘭TT盃 | 2021/08/25 09:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2021/07/06 10:25 | Samvel Melkumian v Oleksandr Kostiuk | W | 0-3 |
| 烏克蘭TT盃 | 2021/06/28 00:45 | Oleksandr Kostiuk v Samvel Melkumian | L | 2-3 |
| 烏克蘭TT盃 | 2021/06/21 08:05 | Samvel Melkumian v Oleksandr Kostiuk | W | 0-3 |
| 世界盃乒乓球賽 | 2021/01/26 21:10 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| 烏克蘭TT盃 | 2021/01/26 18:15 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-0 |
| 烏克蘭TT盃 | 2021/01/06 11:25 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-2 |
| 烏克蘭TT盃 | 2020/12/19 16:40 | Samvel Melkumian v Oleksandr Kostiuk | W | 1-3 |
| 烏克蘭TT盃 | 2020/12/15 22:15 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-2 |
| 烏克蘭TT盃 | 2020/12/12 18:25 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2020/12/11 14:20 | Oleksandr Kostiuk v Samvel Melkumian | L | 2-3 |
| 烏克蘭TT盃 | 2020/12/09 01:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2020/12/05 17:50 | Samvel Melkumian v Oleksandr Kostiuk | W | 1-3 |
| 烏克蘭TT盃 | 2020/12/04 16:40 | Oleksandr Kostiuk v Samvel Melkumian | W | 3-1 |
| 烏克蘭TT盃 | 2020/12/02 22:45 | Oleksandr Kostiuk v Samvel Melkumian | L | 1-3 |
| 烏克蘭TT盃 | 2020/12/01 23:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 2-3 |
| 烏克蘭TT盃 | 2020/11/29 20:45 | Samvel Melkumian v Oleksandr Kostiuk | W | 1-3 |
| 烏克蘭TT盃 | 2020/11/29 15:30 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-0 |
| 烏克蘭TT盃 | 2020/11/26 23:15 | Samvel Melkumian v Oleksandr Kostiuk | W | 1-3 |
| 烏克蘭TT盃 | 2020/11/11 12:00 | Samvel Melkumian v Oleksandr Kostiuk | L | 3-1 |
| 烏克蘭TT盃 | 2020/11/11 07:20 | Samvel Melkumian v Oleksandr Kostiuk | W | 1-3 |
| 世界盃乒乓球賽 | 2020/11/10 13:10 | Oleksandr Kostiuk v Samvel Melkumian | L | 2-3 |