| TT Cup Ukraine | 2021/03/06 17:05 | Alexander Tkachenko v Nazar Kovalchuk | L | 1-3 |
| 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 | 2020/06/18 23:05 | Nazar Kovalchuk v Alexander Tkachenko | W | 0-3 |
| TT Cup Ukraine | 2020/06/17 23:05 | Nazar Kovalchuk v Alexander Tkachenko | L | 3-0 |
| TT Cup Ukraine | 2020/06/16 10:40 | Nazar Kovalchuk v Alexander Tkachenko | L | 3-0 |
| TT Cup Ukraine | 2020/06/15 13:00 | Nazar Kovalchuk v Alexander Tkachenko | L | 3-2 |