| Jan 5, 2026 | Marek | 1–0 | Dhyana Patel | Round 6: Marek, Matyas - Dhyana Patel | Neo-Grünfeld Defense: Goglidze Attack | |
| Jan 3, 2026 | Marek | ½–½ | Mao | Round 3: Marek, Matyas - Mao, Fengxi | Sicilian Defense: Smith-Morra Gambit | |
| Jan 3, 2026 | Marek | 0–1 | Budisavljevic | Round 2: Marek, Matyas - Budisavljevic, Luka | Réti Opening: Advance Variation | |
| Jan 17, 2025 | Fizer | 0–1 | Marek | praha2025 | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Jan 16, 2025 | Marek | ½–½ | Harshavardhan G B | praha2025 | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Jan 15, 2025 | Felix | 0–1 | Marek | praha2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jan 14, 2025 | Marek | ½–½ | Diachek | praha2025 | Queen's Pawn Game: Colle System | |
| Jan 13, 2025 | Mannion | ½–½ | Marek | praha2025 | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | |
| Jan 12, 2025 | Marek | 1–0 | Platonovs | praha2025 | English Opening: Neo-Catalan | |
| Jan 11, 2025 | Marek | 1–0 | Korniichuk | praha2025 | Indian Defense: London System | |
| Jan 11, 2025 | Salgovic | ½–½ | Marek | praha2025 | Sicilian Defense: Kan Variation, Modern Variation | |
| Jan 10, 2025 | Ejsymont | 0–1 | Marek | praha2025 | Modern Defense | |
| Dec 21, 2024 | Marek | 1–0 | Michalik | Round 4: Marek, Matyas - Michalik, Peter | King's Indian Attack: Wahls Defense | |
| Aug 4, 2024 | Marek | 1–0 | Miazhynski | rapid | Zukertort Opening | |
| Aug 4, 2024 | Marek | 1–0 | Fargac | rapid | King's Indian Attack | |
| Aug 4, 2024 | Marek | 1–0 | Leszko | rapid | King's Indian Attack | |
| Aug 4, 2024 | Movsesian | 1–0 | Marek | rapid | Sicilian Defense: Modern Variations | |
| Aug 4, 2024 | Dokaniev | 0–1 | Marek | rapid | Sicilian Defense: Classical Variation | |
| Aug 4, 2024 | Pacher | 1–0 | Marek | rapid | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Dec 21, 2024 | Babula | 1–0 | Marek | Round 5: Babula, Vlastimil - Marek, Matyas | Rapport-Jobava System | |
| Dec 21, 2024 | Polak | 1–0 | Marek | Round 12: Polak, Tomas - Marek, Matyas | Benoni Defense | |
| Jul 6, 2024 | Marek | ½–½ | Sokolovsky | Sachovy festival CB | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Jul 5, 2024 | Vybiral | 1–0 | Marek | Sachovy festival CB | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jul 4, 2024 | Marek | ½–½ | Radnaev | Sachovy festival CB | Sicilian Defense: Moscow Variation | |
| Jul 3, 2024 | Vaclavik | 0–1 | Marek | Sachovy festival CB | Torre Attack: Classical Defense | |
| Jul 2, 2024 | Marek | ½–½ | Lhotska | Sachovy festival CB | Petrov's Defense: Cozio Attack | |
| Jul 1, 2024 | Dobsa | 0–1 | Marek | Sachovy festival CB | Sicilian Defense: Kalashnikov Variation | |
| Jun 30, 2024 | Marek | ½–½ | Chval | Sachovy festival CB | King's Indian Attack: Symmetrical Defense | |
| Jun 29, 2024 | Rucabado | 0–1 | Marek | Sachovy festival CB | Pirc Defense: Classical Variation, Quiet System, Czech Defense | |
| Jul 11, 2023 | Jaroszewski | 1–0 | Nahalka | Piestany B | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jul 9, 2023 | Dudek | ½–½ | Marek | Ceske Budejovice IM | Queen's Pawn Game: Accelerated London System | |
| Jul 8, 2023 | Marek | ½–½ | Mirzoev | Ceske Budejovice IM | French Defense: Exchange Variation | |
| Jul 7, 2023 | Marek | ½–½ | Soucek | Ceske Budejovice IM | Nimzo-Larsen Attack: Modern Variation | |
| Jul 6, 2023 | Jeet | 1–0 | Marek | Ceske Budejovice IM | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Jul 5, 2023 | Marek | ½–½ | Stinka | Ceske Budejovice IM | Bird Opening | |
| Jul 4, 2023 | Delgerdalai | ½–½ | Marek | Ceske Budejovice IM | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Jul 3, 2023 | Marek | 1–0 | Ermitsch | Ceske Budejovice IM | Sicilian Defense: French Variation | |
| Jul 2, 2023 | Gschiel | ½–½ | Marek | Ceske Budejovice IM | English Opening: Symmetrical Variation | |
| Jul 1, 2023 | Marek | ½–½ | Konopka | Ceske Budejovice IM | Petrov's Defense: Cozio Attack | |
| Jul 19, 2023 | Marek Matyas | ½–½ | Rakshitta Ravi | Open A | King's Indian Attack | |
| Jul 17, 2023 | Marek Matyas | ½–½ | Niedbala Bartlomiej | Open A | Sicilian Defense: Hyperaccelerated Dragon | |
| Jul 17, 2023 | Laurusas Tomas | 1–0 | Marek Matyas | Open A | Benoni Defense | |
| Jul 16, 2023 | Pechac Jergus | 1–0 | Marek Matyas | Open A | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 15, 2023 | Druska Juraj | ½–½ | Marek Matyas | Open A | Sicilian Defense: French Variation | |
| Jul 14, 2023 | Marek Matyas | ½–½ | Livaic Leon | Open A | French Defense: Exchange Variation | |
| Jul 13, 2023 | Marek Matyas | 1–0 | Colbow Collin | Open A | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jul 12, 2023 | Sahidi Samir | 0–1 | Marek Matyas | Open A | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Jul 11, 2023 | Marek Matyas | 1–0 | Nielsen Jon I Horni | Open A | Nimzo-Larsen Attack: Indian Variation | |
| Sep 25, 2022 | Marek | ½–½ | Tsolakidou | IM Round 8: Marek, Matyas - Tsolakidou, Stavroula | Petrov's Defense: Cozio Attack | |
| Sep 25, 2022 | Yim | ½–½ | Marek | IM Round 9: Yim, Sung Ho - Marek, Matyas | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Sep 24, 2022 | Marek | 1–0 | Krishnan | IM Round 6: Marek, Matyas - Krishnan, Varun | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Sep 24, 2022 | Cervantes | ½–½ | Marek | IM Round 7: Cervantes, Thalia - Marek, Matyas | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Sep 23, 2022 | Marek | ½–½ | Antova | IM Round 4: Marek, Matyas - Antova, Gabriela | Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Fianchetto Variation | |
| Sep 23, 2022 | Eckert | 0–1 | Marek | IM Round 5: Eckert, Doug - Marek, Matyas | Benko Gambit Accepted: Fully Accepted Variation | |
| Sep 22, 2022 | Marek | 1–0 | Denby | IM Round 3: Marek, Matyas - Denby, Caleb | Caro-Kann Defense: Breyer Variation, Stein Attack | |
| Sep 22, 2022 | Chen | ½–½ | Marek | IM Round 2: Chen, Ryo - Marek, Matyas | Sicilian Defense: Kan Variation, Wing Attack | |
| Sep 21, 2022 | Marek | ½–½ | Wang | IM Round 1: Marek, Matyas - Wang, Tianqi | Caro-Kann Defense: Breyer Variation | |
| Aug 20, 2022 | Jordanov | 1–0 | Marek | Olomouc 2022 | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Aug 19, 2022 | Marek | 1–0 | Fizer | Olomouc 2022 | Zukertort Opening: Sicilian Invitation | |
| Aug 18, 2022 | Soban | ½–½ | Marek | Olomouc 2022 | English Opening: Symmetrical Variation, Botvinnik System | |
| Aug 17, 2022 | Marek | ½–½ | Muzika | Olomouc 2022 | King's Indian Attack | |
| Aug 16, 2022 | Al-Ali | ½–½ | Marek | Olomouc 2022 | Petrov's Defense: Three Knights Game | |
| Aug 15, 2022 | Marek | 1–0 | Zvolanek | Olomouc 2022 | Alekhine Defense: Modern Variation, Flohr Variation | |
| Aug 14, 2022 | Marek | ½–½ | Mohapl | Olomouc 2022 | English Opening: Caro-Kann Defensive System | |
| Aug 13, 2022 | Stepan | 0–1 | Marek | Olomouc 2022 | King's Indian Defense: Exchange Variation | |
| May 24, 2022 | Proleiko | 0–1 | Marek | 2022 Saint Louis Norm Congress - International Master | ? | |
| May 23, 2022 | Marek | 0–1 | Grabinsky | 2022 Saint Louis Norm Congress - International Master | French Defense: Schlechter Variation | |
| May 22, 2022 | Marek | ½–½ | Posthuma | 2022 Saint Louis Norm Congress - International Master | Caro-Kann Defense: Exchange Variation | |
| May 22, 2022 | Yu | 0–1 | Marek | 2022 Saint Louis Norm Congress - International Master | English Opening: Symmetrical Variation | |
| May 21, 2022 | Marek | ½–½ | Lee | 2022 Saint Louis Norm Congress - International Master | Zukertort Opening | |
| May 21, 2022 | Tokhirjonova | 0–1 | Marek | 2022 Saint Louis Norm Congress - International Master | Queen's Gambit Accepted: Classical Defense, Main Line | |
| May 20, 2022 | Marek | 1–0 | Antova | 2022 Saint Louis Norm Congress - International Master | King's Indian Attack: Keres Variation | |
| May 20, 2022 | Paul Chambers | ½–½ | Marek | 2022 Saint Louis Norm Congress - International Master | Sicilian Defense: French Variation | |
| May 19, 2022 | Marek | 1–0 | Rodriguez Rivera | 2022 Saint Louis Norm Congress - International Master | Pirc Defense | |
