| Jun 24, 2026 | Leniart | 1–0 | Kozak | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Sicilian Defense: Closed | |
| Jun 23, 2026 | Kozak | 1–0 | Heberla | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Zukertort Opening | |
| Jun 22, 2026 | Lodici | 1–0 | Kozak | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jun 21, 2026 | Kozak | 0–1 | Samunenkov | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Caro-Kann Defense: Tartakower Variation | |
| Jun 20, 2026 | Kozak | ½–½ | Seemann | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Sicilian Defense: French Variation | |
| Jun 19, 2026 | Dehtiarov | ½–½ | Kozak | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 18, 2026 | Kozak | ½–½ | Cyborowski | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Jun 17, 2026 | Finek | 1–0 | Kozak | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Semi-Slav Defense: Stoltz Variation | |
| Jun 16, 2026 | Kozak | 1–0 | Grandelius | Druzynowe Mistrzostwa Polski - Ekstraliga 2026 | Queen's Pawn Game: Symmetrical Variation | |
| Mar 7, 2026 | Janeczko | ½–½ | Kozak | AMP-TEAM | Philidor Defense: Lion Variation | |
| Mar 7, 2026 | Kozak | ½–½ | Karpus | AMP-TEAM | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Mar 7, 2026 | Dylag | 0–1 | Kozak | AMP-TEAM | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 7, 2026 | Kozak | 1–0 | Golenia | AMP-TEAM | Indian Defense: London System | |
| Mar 6, 2026 | Mis | 1–0 | Kozak | AMP-TEAM | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Mar 6, 2026 | Zochowski | 0–1 | Kozak | AMP-TEAM | English Opening | |
| Mar 6, 2026 | Kozak | 1–0 | Lasok | AMP-TEAM | Semi-Slav Defense: Stoltz Variation, Center Variation | |
| Mar 6, 2026 | Grzesik | ½–½ | Kozak | AMP-TEAM | English Opening | |
| Mar 6, 2026 | Trzebinski | 0–1 | Kozak | AMP-M | Philidor Defense: Lion Variation | |
| Mar 6, 2026 | Kozak | 1–0 | Gradalski | AMP- M | Zukertort Opening | |
| Mar 6, 2026 | Wysocki | 0–1 | Kozak | AMP- M | Pirc Defense | |
| Mar 6, 2026 | Kozak | 0–1 | Majdanski | AMP- M | Réti Opening: Anglo-Slav Variation, Gurevich System | |
| Mar 6, 2026 | Kolodziejski | 0–1 | Kozak | AMP- M | Caro-Kann Defense: Two Knights Attack | |
| Mar 5, 2026 | Grochol | 1–0 | Kozak | AMP- M | Indian Defense: Accelerated London System | |
| Mar 5, 2026 | Kozak | 1–0 | Polak | AMP- M | Indian Defense: London System | |
| Mar 5, 2026 | Dopierala | 0–1 | Kozak | AMP-M | Marienbad System | |
| Mar 5, 2026 | Kozak | 0–1 | Kopaczewski | AMP-M | Vienna Game: Max Lange Defense | |
| Dec 30, 2025 | Kozak | ½–½ | Baum | Runda 9: Kozak, Antoni - Baum, Jonasz | Neo-Grünfeld Defense: Classical Variation | |
| Dec 30, 2025 | Turski | ½–½ | Kozak | Runda 8: Turski, Bartlomiej - Kozak, Antoni | Sicilian Defense: Kalashnikov Variation | |
| Dec 30, 2025 | Kozak | ½–½ | Terkiewicz | Runda 7: Kozak, Antoni - Terkiewicz, Bruno | King's Indian Attack | |
| Dec 29, 2025 | Salna | 1–0 | Kozak | Runda 6: Salna, Aleksandras - Kozak, Antoni | Indian Defense: Normal Variation | |
| Dec 29, 2025 | Kozak | 1–0 | Sernecki | Runda 5: Kozak, Antoni - Sernecki, Franciszek | Indian Defense: London System | |
| Dec 28, 2025 | Kokoszczynski | 0–1 | Kozak | Runda 4: Kokoszczynski, Jan - Kozak, Antoni | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Dec 27, 2025 | Kozak | 1–0 | Greicius | Runda 3: Kozak, Antoni - Greicius, Pijus | Catalan Opening: Closed | |
| Dec 27, 2025 | Wojdak | 1–0 | Kozak | Runda 2: Wojdak, Jan - Kozak, Antoni | Bogo-Indian Defense: Grünfeld Variation | |
| Dec 27, 2025 | Kozak | 1–0 | Przybylski | Runda 1: Kozak, Antoni - Przybylski, Jan | Queen's Gambit Declined | |
| Jun 4, 2024 | Dziuba | 1–0 | Kozak | Przeworsk 2024 | Queen's Gambit Declined | |
| Jun 3, 2024 | Kozak | ½–½ | Stefansson | Przeworsk 2024 | Zukertort Opening | |
| Jun 2, 2024 | Kozak | * | Royal | Przeworsk 2024 | King's Indian Attack: Double Fianchetto | |
| Jun 2, 2024 | Bogdanov | 1–0 | Kozak | Przeworsk 2024 | Caro-Kann Defense: Classical Variation | |
| Jun 1, 2024 | Fus | ½–½ | Kozak | Przeworsk 2024 | French Defense: MacCutcheon Variation, Lasker Variation | |
| May 31, 2024 | Kozak | 1–0 | Romanishin | Przeworsk 2024 | King's Knight Opening: Konstantinopolsky | |
| May 30, 2024 | Kozak | 0–1 | Sowinski | Przeworsk 2024 | Sicilian Defense: French Variation, Open | |
| May 30, 2024 | Galperin | ½–½ | Kozak | Przeworsk 2024 | Slav Defense: Chebanenko Variation, Advance System | |
| May 29, 2024 | Malek | 0–1 | Kozak | Przeworsk 2024 | Queen's Indian Accelerated | |
| Jan 4, 2024 | Dzida | ½–½ | Kozak | Cracovia 2023 Open A | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jan 3, 2024 | Kozak | 1–0 | Keinanen | Cracovia 2023 Open A | King's Indian Defense: Orthodox Variation, Classical System | |
| Jan 2, 2024 | Kozak | 1–0 | Lukasiewicz | Cracovia 2023 Open A | Ruy Lopez: Berlin Defense | |
| Jan 2, 2024 | Lewicki | 1–0 | Kozak | Cracovia 2023 Open A | Modern Defense | |
| Dec 31, 2023 | Ernst | ½–½ | Kozak | Cracovia 2023 Open A | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 30, 2023 | Kozak | ½–½ | Ashwath | Cracovia 2023 Open A | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Dec 29, 2023 | Sernecki | 1–0 | Kozak | Cracovia 2023 Open A | Bogo-Indian Defense: Retreat Variation | |
| Dec 28, 2023 | Kozak | 1–0 | Kyc | Cracovia 2023 Open A | English Opening: Symmetrical Variation, Three Knights Variation | |
| Dec 27, 2023 | Jaskolka | 0–1 | Kozak | Cracowia 2023 Open A | Pirc Defense: Classical Variation | |
| Oct 1, 2023 | Chylewski | 0–1 | Kozak | DMP - I Liga 2023 | Queen's Gambit Declined: Traditional Variation | |
| Sep 30, 2023 | Klimkowski | 0–1 | Kozak | DMP - I Liga 2023 | French Defense: Advance Variation, Euwe Variation | |
| Sep 29, 2023 | Kozak | 1–0 | Nurkiewicz | DMP - I Liga 2023 | English Opening: Agincourt Defense, Wimpy System | |
| Sep 28, 2023 | Dziuba | ½–½ | Kozak | DMP - I Liga 2023 | Modern Defense | |
| Sep 27, 2023 | Kozak | 1–0 | Zylka | DMP - I Liga 2023 | King's Indian Attack: Pachman System | |
| Sep 26, 2023 | Kozak | 0–1 | Sieciechowicz | DMP - I Liga 2023 | Italian Game: Giuoco Pianissimo, Normal | |
| Sep 25, 2023 | Dragun | ½–½ | Kozak | DMP - I Liga 2023 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Sep 24, 2023 | Licznerski | 1–0 | Kozak | DMP - I Liga 2023 | Modern Defense: Standard Line | |
| Sep 23, 2023 | Kozak | 1–0 | Murdzia | DMP - I Liga 2023 | Ruy Lopez: Morphy Defense, Duras Variation | |
| Dec 18, 2022 | Kozak | 0–1 | Ziska | European Rapid Chess Championship 2022 | King's Indian Defense: Normal Variation, Rare Defenses | |
| Dec 18, 2022 | Kozak | 0–1 | Lagarde | European Rapid Chess Championship 2022 | Zukertort Opening: Dutch Variation | |
| Dec 18, 2022 | Kozak | 1–0 | Morkunas | Katowice | King's Indian Defense: Normal Variation, Rare Defenses | |
| Dec 18, 2022 | Gregoric | 0–1 | Kozak | Katowice | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Dec 17, 2022 | Kozak | 1–0 | Figa | Katowice | Queen's Gambit Declined: Tartakower Defense, Exchange Variation | |
| Dec 17, 2022 | Kozak | 1–0 | Bouska | Katowice | London System | |
| Dec 17, 2022 | Bartelt | 0–1 | Kozak | European Rapid Championship | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Dec 17, 2022 | Kosteniuk | 1–0 | Kozak | European Rapid Chess Championship 2022 | King's Indian Defense: Fianchetto Variation, Classical Variation | |
| Dec 17, 2022 | Krzywda | 0–1 | Kozak | European Rapid Chess Championship 2022 | Semi-Slav Defense: Normal Variation | |
| Dec 16, 2022 | Kozak | 1–0 | Czyz | Katowice | Slav Defense | |
| Dec 16, 2022 | Kozak | 1–0 | Dwilewicz | Katowice | English Opening: Symmetrical Variation, Full Symmetry Line | |
| Dec 16, 2022 | Kozak | 1–0 | Marczuk | Katowice | King's Indian Defense: Makogonov Variation | |
| Dec 16, 2022 | Kozak | 1–0 | Zimina | Katowice | Zukertort Opening | |
| Dec 16, 2022 | Kozak | 0–1 | Saric | European Blitz Chess Championship 2022 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 16, 2022 | Kozak | 1–0 | Sowinski | European Blitz Chess Championship 2022 | Semi-Slav Defense: Main Line | |
| Dec 16, 2022 | Kozak | 0–1 | Klekowski | European Blitz Chess Championship 2022 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 16, 2022 | Kozak | 1–0 | Kosakowski | European Blitz Chess Championship 2022 | Queen's Pawn Game: Symmetrical Variation | |
| Dec 16, 2022 | Kozak | 1–0 | Hovhannisyan | European Blitz Chess Championship 2022 | Semi-Slav Defense: Normal Variation | |
| Dec 16, 2022 | Kozak | 0–1 | Kazakovskiy | European Blitz Chess Championship 2022 | Zukertort Opening | |
| Dec 16, 2022 | Kozak | 1–0 | Novotny | European Blitz Chess Championship 2022 | Slav Defense | |
| Dec 16, 2022 | Czyz | 0–1 | Kozak | Katowice | Queen's Pawn Game: Accelerated London System | |
| Dec 16, 2022 | Dwilewicz | 0–1 | Kozak | Katowice | Sicilian Defense: Najdorf Variation | |
| Dec 16, 2022 | Marczuk | 1–0 | Kozak | Katowice | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Dec 16, 2022 | Zimina | 0–1 | Kozak | Katowice | Catalan Opening: Open Defense | |
| Dec 16, 2022 | Saric | 0–1 | Kozak | European Blitz Chess Championship 2022 | Zukertort Opening | |
| Dec 16, 2022 | Sowinski | 0–1 | Kozak | European Blitz Chess Championship 2022 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 16, 2022 | Klekowski | 0–1 | Kozak | European Blitz Chess Championship 2022 | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Dec 16, 2022 | Kosakowski | 0–1 | Kozak | European Blitz Chess Championship 2022 | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| Dec 16, 2022 | Hovhannisyan | 1–0 | Kozak | European Blitz Chess Championship 2022 | Sicilian Defense: Chekhover Variation | |
| Dec 16, 2022 | Kazakovskiy | 1–0 | Kozak | European Blitz Chess Championship 2022 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 16, 2022 | Novotny | 0–1 | Kozak | European Blitz Chess Championship 2022 | Sicilian Defense: Moscow Variation | |
| Oct 22, 2022 | Kozak | ½–½ | Guz | World Junior Championship | Caro-Kann Defense: Endgame Offer | |
| Oct 21, 2022 | Utsab Chatterjee | ½–½ | Kozak | World Junior Championship | Caro-Kann Defense: Exchange Variation | |
| Oct 20, 2022 | Stremavicius | 1–0 | Kozak | World Junior Championship | Sicilian Defense: Moscow Variation | |
| Oct 19, 2022 | Kozak | 0–1 | Nesterov | World Junior Championship | Scotch Game | |
| Oct 18, 2022 | Abdurakhmonov | 0–1 | Kozak | World Junior Championship | Queen's Pawn Game: Symmetrical Variation | |
| Oct 16, 2022 | Kozak | 1–0 | Tan | World Junior Championship | Benoni Defense: Classical Variation, Czerniak Defense, Tal Line | |
| Oct 15, 2022 | Nouri | * | Kozak | World Junior Championship | Caro-Kann Defense: Exchange Variation | |