| Aditya Mittal | Alexander Donchenko | 1/2-1/2 | Chess Slovak Open Skalica 2026 | Masters | D91 |
| Alexander Donchenko | Ihor Samunenkov | 1-0 | Chess Slovak Open Skalica 2026 | Masters | C84 |
| Alexandr Fier | Alexander Donchenko | 1-0 | Chess Slovak Open Skalica 2026 | Masters | B19 |
| Alexander Donchenko | Daniel Dardha | 1/2-1/2 | Chess Slovak Open Skalica 2026 | Masters | A21 |
| Jergus Pechac | Alexander Donchenko | 1-0 | Chess Slovak Open Skalica 2026 | Masters | A34 |
| Alexander Donchenko | Leon Luke Mendonca | 1/2-1/2 | Chess Slovak Open Skalica 2026 | Masters | E15 |
| Shahil Dey | Alexander Donchenko | 1/2-1/2 | 24th Int. Chess Tournament Spilimbergo 2026 | A14 |
| Alexander Donchenko | Ortik Nigmatov | 1/2-1/2 | 24th Int. Chess Tournament Spilimbergo 2026 | A06 |
| Alexander Donchenko | Artyom Bogdanov | 1-0 | 24th Int. Chess Tournament Spilimbergo 2026 | A07 |
| Marco Materia | Alexander Donchenko | 1/2-1/2 | 24th Int. Chess Tournament Spilimbergo 2026 | E71 |
| Alexander Donchenko | Lars Goldbeck | 1-0 | 24th Int. Chess Tournament Spilimbergo 2026 | D30 |
| Alexander Donchenko | Georg, Dr. Braun | 0-1 | German Chess Championship 2026 | Masters Men | E46 |
| Alexander Donchenko | Tobias Kuegel | 1/2-1/2 | German Chess Championship 2026 | Masters Men | D78 |
| Alexander Donchenko | Leonardo Costa | 1-0 | German Chess Championship 2026 | Masters Men | E06 |
| Michele Godena | Alexander Donchenko | 1/2-1/2 | 24th Int. Chess Tournament Spilimbergo 2026 | B10 |
| Abdimalik Abdisalimov | Alexander Donchenko | 1-0 | 24th Int. Chess Tournament Spilimbergo 2026 | E81 |
| Alexander Donchenko | Alua Nurman | 1-0 | KazChess Masters Almaty 2026 | E68 |
| Luis Engel | Alexander Donchenko | 0-1 | German Chess Championship 2026 | Masters Men | B19 |
| Niclas Huschenbeth | Alexander Donchenko | 0-1 | German Chess Championship 2026 | Masters Men | B12 |
| Dmitrij Kollars | Alexander Donchenko | 1/2-1/2 | German Chess Championship 2026 | Masters Men | B12 |
| Bennet Hagner | Alexander Donchenko | 1-0 | German Chess Championship 2026 | Masters Men | B12 |
| Sam Shankland | Alexander Donchenko | 1/2-1/2 | KazChess Masters Almaty 2026 | B12 |
| Alexander Donchenko | Denis Makhnev | 1/2-1/2 | KazChess Masters Almaty 2026 | D37 |
| Alexander Donchenko | Karen H Grigoryan | 1/2-1/2 | Olympiad-45 | E05 |
