| TT Cup | 2020/11/12 12:25 | Alexander Tkachenko v Nazar Kovalchuk | L | 1-3 |
| TT Cup Ukraine | 2020/11/12 11:50 | Alexander Tkachenko v Nazar Kovalchuk | W | 3-0 |
| TT Cup Ukraine | 2020/11/11 08:20 | Nazar Kovalchuk v Alexander Tkachenko | W | 1-3 |
| TT Cup Ukraine | 2020/07/30 10:50 | Alexander Tkachenko v Nazar Kovalchuk | L | 0-3 |
| TT Cup Ukraine | 2020/07/29 10:15 | Alexander Tkachenko v Nazar Kovalchuk | W | 3-1 |
| TT Cup Ukraine | 2020/06/30 16:30 | Alexander Tkachenko v Nazar Kovalchuk | L | 1-3 |
| TT Cup Ukraine | 2020/06/30 14:45 | Alexander Tkachenko v Nazar Kovalchuk | W | 3-2 |
| TT Cup Ukraine | 2020/06/29 13:40 | Nazar Kovalchuk v Alexander Tkachenko | L | 3-0 |
| TT Cup Ukraine | 2021/03/06 15:55 | Alexander Tkachenko v Denys Pesternikov | L | 0-3 |
| TT Cup Ukraine | 2021/03/06 14:45 | Alexander Tkachenko v Aleksey Gaponov | L | 0-3 |
| TT Cup Ukraine | 2021/03/03 12:25 | Oleksandr Levadniy v Alexander Tkachenko | L | 3-0 |
| TT Cup Ukraine | 2021/03/03 11:50 | Alexander Tkachenko v Anton Molochko | L | 1-3 |
| TT Cup Ukraine | 2021/03/03 10:40 | Alexander Tkachenko v Yuryi Shchepanskyi | L | 2-3 |
| TT Cup Ukraine | 2021/03/03 09:30 | Alexander Tkachenko v Yuryi Shchepanskyi | L | 2-3 |
| TT Cup Ukraine | 2021/03/03 07:45 | Anton Molochko v Alexander Tkachenko | L | 3-1 |
| TT Cup Ukraine | 2021/03/03 07:10 | Oleksandr Levadniy v Alexander Tkachenko | W | 2-3 |
| TT Cup Ukraine | 2021/03/06 16:30 | Nazar Kovalchuk v Aleksey Gaponov | L | 0-3 |
| TT Cup Ukraine | 2021/03/06 15:20 | David Simonchuk v Nazar Kovalchuk | W | 0-3 |
| TT Cup Ukraine | 2021/03/06 14:10 | Nazar Kovalchuk v Denys Pesternikov | W | 3-1 |
| TT Cup Ukraine | 2021/03/04 13:25 | Nazar Kovalchuk v Aleksey Krutko | L | 1-3 |
| TT Cup Ukraine | 2021/03/04 12:15 | Yevhen Masko v Nazar Kovalchuk | W | 0-3 |
| TT Cup Ukraine | 2021/03/04 08:45 | Serhii Tsybulin v Nazar Kovalchuk | W | 1-3 |
| TT Cup Ukraine | 2021/03/04 07:00 | Oleksandr Shkurupii v Nazar Kovalchuk | L | 3-2 |
| TT Cup Ukraine | 2021/03/04 05:50 | Aleksey Krutko v Nazar Kovalchuk | W | 1-3 |