| Setka Cup | 2020/09/17 02:55 | Oleksandr Kovalchuk v Sergey Tkachev | W | 3-1 |
| Ukraine - Win Cup | 2020/06/19 13:00 | Oleksandr Kovalchuk v Sergey Tkachev | L | 2-3 |
| Ukraine - Win Cup | 2020/06/04 16:30 | Oleksandr Kovalchuk v Sergey Tkachev | W | 3-1 |
| Ukraine - Win Cup | 2020/06/03 14:00 | Oleksandr Kovalchuk v Sergey Tkachev | W | 3-1 |
| Ukraine - Win Cup | 2020/05/13 09:00 | Sergey Tkachev v Oleksandr Kovalchuk | W | 1-3 |
| Ukraine - Win Cup | 2020/05/13 06:00 | Oleksandr Kovalchuk v Sergey Tkachev | W | 3-2 |