| TT Cup (2020) | 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 | 2021/01/21 10:05 | Yuryi Shchepanskyi v Alexander Tkachenko | W | 1-3 |
| TT Cup Ukraine | 2021/01/21 09:30 | Alexander Tkachenko v Oleksandr Shkurupii | L | 2-3 |
| TT Cup Ukraine | 2021/01/21 08:20 | Anton Molochko v Alexander Tkachenko | L | 3-1 |
| TT Cup Ukraine | 2021/01/21 07:10 | Alexander Tkachenko v Evgeniy Pismenniy | L | 1-3 |
| TT Cup Ukraine | 2021/01/20 11:15 | Alexander Tkachenko v Oleksandr Shkurupii | L | 2-3 |
| TT Cup Ukraine | 2021/01/20 10:05 | Alexander Tkachenko v Evgeniy Pismenniy | L | 2-3 |
| TT Cup Ukraine | 2021/01/20 08:55 | Alexander Tkachenko v Yuryi Shchepanskyi | W | 3-2 |
| TT Cup Ukraine | 2021/01/20 07:45 | Alexander Tkachenko v Anton Molochko | L | 0-3 |
| TT Cup Ukraine | 2021/02/07 02:00 | Nazar Kovalchuk v Oleksandr Shkurupii | W | 3-0 |
| TT Cup Ukraine | 2021/02/07 01:30 | Sergey Zemyantsev v Nazar Kovalchuk | W | 0-3 |
| TT Cup Ukraine | 2021/02/06 23:30 | Oleksandr Shkurupii v Nazar Kovalchuk | L | 3-1 |
| TT Cup Ukraine | 2021/02/06 22:00 | Serhii Boiko v Nazar Kovalchuk | L | 3-1 |
| TT Cup Ukraine | 2021/02/06 21:00 | Aleksey Krutko v Nazar Kovalchuk | W | 2-3 |
| TT Cup Ukraine | 2021/02/06 04:20 | Nazar Kovalchuk v Oleksandr Shkurupii | W | 3-0 |
| TT Cup Ukraine | 2021/02/06 03:20 | Sergey Zemyantsev v Nazar Kovalchuk | W | 2-3 |
| TT Cup Ukraine | 2021/02/06 02:50 | Nazar Kovalchuk v Oleksandr Shkurupii | W | 3-2 |