| Jun 28, 2026 | Verner | 0–1 | Brejnik | 21. Zlata Praha Rapid Open 2026 | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Jun 28, 2026 | Slaby | 1–0 | Brejnik | 21. Zlata Praha Rapid Open 2026 | Réti Opening: Advance Variation | |
| Jun 28, 2026 | Brejnik | 1–0 | Augustyn | 21. Zlata Praha Rapid Open 2026 | Catalan Opening: Open Defense, Modern Sharp Variation | |
| Jun 28, 2026 | Brejnik | ½–½ | Temirbek | 21. Zlata Praha Rapid Open 2026 | Catalan Opening: Open Defense, Classical Line | |
| Jun 28, 2026 | Brejnik | 0–1 | Shamian | 21. Zlata Praha Rapid Open 2026 | Bogo-Indian Defense: Grünfeld Variation | |
| Jun 28, 2026 | Mikhno | 0–1 | Brejnik | 21. Zlata Praha Rapid Open 2026 | Tarrasch Defense | |
| Jun 28, 2026 | Brejnik | 1–0 | Derypasko | 21. Zlata Praha Rapid Open 2026 | Slav Indian | |
| Jun 28, 2026 | Brejnik | 1–0 | Trestik | 21. Zlata Praha Rapid Open 2026 | King's Indian Defense: Fianchetto Variation, Immediate Fianchetto | |
| Jun 28, 2026 | Klozova | 0–1 | Brejnik | 21. Zlata Praha Rapid Open 2026 | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | |
| Jun 27, 2026 | Brejnik | 1–0 | Shagbazyan | 21. Zlata Praha Blitz Open 2026 | Catalan Opening: Open Defense, Classical Line | |
| Jun 27, 2026 | Brejnik | 1–0 | Muller | 21. Zlata Praha Blitz Open 2026 | Catalan Opening: Closed, Main Line | |
| Jun 27, 2026 | Shamian | 0–1 | Brejnik | 21. Zlata Praha Blitz Open 2026 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jun 27, 2026 | Brejnik | 1–0 | Derypasko | 21. Zlata Praha Blitz Open 2026 | Neo-Grünfeld Defense: with g3 | |
| Jun 27, 2026 | Melich | 0–1 | Brejnik | 21. Zlata Praha Blitz Open 2026 | Polish Opening | |
| Jun 27, 2026 | Druska | 1–0 | Brejnik | 21. Zlata Praha Blitz Open 2026 | Queen's Pawn Game: Colle System | |
| Jun 27, 2026 | Brejnik | 1–0 | Slaby | 21. Zlata Praha Blitz Open 2026 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 27, 2026 | Plesnivy | 0–1 | Brejnik | 21. Zlata Praha Blitz Open 2026 | Queen's Pawn Game: Zukertort Variation | |
| Jun 27, 2026 | Brejnik | 1–0 | Baltynov | 21. Zlata Praha Blitz Open 2026 | Indian Defense: Anti-Nimzo-Indian | |
| Jun 27, 2026 | Hrabusa | 1–0 | Brejnik | 21. Zlata Praha Blitz Open 2026 | Zukertort Opening | |
| Jun 27, 2026 | Brejnik | 1–0 | Filindash | 21. Zlata Praha Blitz Open 2026 | Catalan Opening: Open Defense, Classical Line | |
| Dec 20, 2025 | Zwardon | 1–0 | Brejnik | Round 15: Zwardon, Vojtech - Brejnik, Gustav | English Opening: Agincourt Defense | |
| Dec 20, 2025 | Brejnik | 0–1 | Rubes | Round 10: Brejnik, Gustav - Rubes, Jan | Queen's Gambit Declined: Queen's Knight Variation | |
| Dec 20, 2025 | Haba | 1–0 | Brejnik | Round 3: Haba, Petr - Brejnik, Gustav | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 27, 2025 | Gloser | ½–½ | Brejnik | CZECH OPEN 2025 - A - PARDUBICE OPEN - open grandmaster tournament | Nimzo-Larsen Attack: Modern Variation | |
| Jul 24, 2025 | Rusnak | 0–1 | Brejnik | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Jul 24, 2025 | Brejnik | ½–½ | Nytra | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | King's Indian Defense: Fianchetto Variation, Yugoslav Variation | |
| Jul 24, 2025 | Bokhnak | 1–0 | Brejnik | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | Caro-Kann Defense: Exchange Variation | |
| Jul 24, 2025 | Brejnik | 0–1 | Kraus | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | Queen's Gambit Declined | |
| Jul 24, 2025 | Rasik | ½–½ | Brejnik | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | Caro-Kann Defense: Breyer Variation | |
| Jul 23, 2025 | Brejnik | 1–0 | Ret | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | Queen's Gambit Declined | |
| Jul 23, 2025 | Zwardon | 1–0 | Brejnik | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | English Opening: Agincourt Defense | |
| Jul 12, 2024 | Svoboda | 1–0 | Brejnik | Round 2: Svoboda, Vaclav - Brejnik, Gustav | Caro-Kann Defense: Tartakower Variation | |
| Apr 1, 2024 | Turcan | 1–0 | Brejnik | 43. Turnaj sachovych nadeji - Pobeskydi | Caro-Kann Defense: Endgame Offer | |
| Mar 31, 2024 | Brejnik | 1–0 | Witkowski | 43. Turnaj sachovych nadeji - Pobeskydi | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| Mar 31, 2024 | Haladaj | 0–1 | Brejnik | 43. Turnaj sachovych nadeji - Pobeskydi | King's Indian Attack: French Variation | |
| Mar 30, 2024 | Brejnik | ½–½ | Tolmacevs | 43. Turnaj sachovych nadeji - Pobeskydi | Benoni Defense: Knight's Tour Variation | |
| Mar 30, 2024 | Jires | ½–½ | Brejnik | 43. Turnaj sachovych nadeji - Pobeskydi | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Mar 29, 2024 | Brejnik | 1–0 | Zimny | Pobeskydi 2024 | Slav Defense: Modern Line | |
| Mar 29, 2024 | Trojan | 0–1 | Brejnik | Pobeskydi 2024 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Mar 28, 2024 | Mrazik | 1–0 | Brejnik | Pobeskydi 2024 | Zukertort Opening | |
| Mar 16, 2024 | Martinkovic | ½–½ | Brejnik | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Maróczy Variation | |
| Mar 15, 2024 | Brejnik | ½–½ | Cimburek | MČR mládeže 2024 - FIDE OPEN | Slav Defense: Modern Line | |
| Mar 14, 2024 | Vojtech | 0–1 | Brejnik | MČR mládeže 2024 - FIDE OPEN | Catalan Opening: Open Defense | |
| Mar 13, 2024 | Brejnik | ½–½ | Zrubek | MČR mládeže 2024 - FIDE OPEN | Queen's Gambit Declined: Chigorin Defense | |
| Mar 12, 2024 | Mlynek | 0–1 | Brejnik | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Mar 11, 2024 | Brejnik | ½–½ | Valdman | MČR mládeže 2024 - FIDE OPEN | Benoni Defense: Classical Variation, Czerniak Defense, Tal Line | |
| Mar 11, 2024 | Brozova | 0–1 | Brejnik | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Tartakower Variation | |
| Mar 10, 2024 | Brejnik | 1–0 | Cerny | MČR mládeže 2024 - FIDE OPEN | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 9, 2024 | Brychta | 0–1 | Brejnik | MČR mládeže 2024 - FIDE OPEN | English Opening: Agincourt Defense | |
| Dec 21, 2024 | Babula | 1–0 | Brejnik | Round 3: Babula, Vlastimil - Brejnik, Gustav | Queen's Gambit Declined | |
| Jul 16, 2023 | Brejnik | ½–½ | Hurtik | Czech Open 2023 - E | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 15, 2023 | Vichnar | ½–½ | Brejnik | Czech Open 2023 - E | Catalan Opening: Open Defense | |
| Mar 25, 2023 | Burdalev | 1–0 | Brejnik | Czech Extraliga | Queen's Pawn Game: Symmetrical Variation | |
| Mar 24, 2023 | Brejnik | 1–0 | Nemec | Czech Extraliga | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Feb 19, 2023 | Vojta | 0–1 | Brejnik | Czech Extraliga | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Feb 18, 2023 | Brejnik | 0–1 | Bednar | Czech Extraliga | Benko Gambit Accepted: Yugoslav | |
| Jan 8, 2023 | Brejnik | 0–1 | Frank | Czech Extraliga | Queen's Pawn Game: Modern Defense | |
| Jan 7, 2023 | Gnida | ½–½ | Brejnik | Czech Extraliga | Slav Defense | |
| Oct 16, 2022 | Brejnik | 0–1 | Finek | Czech Extraliga | Semi-Slav Defense: Main Line | |
| Oct 15, 2022 | Paulus | 1–0 | Brejnik | Czech Extraliga | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Aug 12, 2022 | Brejnik | 1–0 | Svatos | Letni Praha 2022 | Benoni Defense: Classical Variation, Czerniak Defense, Tal Line | |
| Aug 11, 2022 | Kaspi | 1–0 | Brejnik | Letni Praha 2022 | Slav Defense: Modern Line | |
| Aug 10, 2022 | Brejnik | ½–½ | Sarkar | Letni Praha 2022 | Benoni Defense: Fianchetto Variation | |
| Aug 9, 2022 | Cernousek | ½–½ | Brejnik | Letni Praha 2022 | Caro-Kann Defense: Exchange Variation | |
| Aug 8, 2022 | Brejnik | 1–0 | Zanan | Letni Praha 2022 | Catalan Opening: Open Defense | |
| Aug 7, 2022 | Hajiyev | 0–1 | Brejnik | Letni Praha 2022 | Slav Defense: Exchange Variation | |
| Aug 6, 2022 | Toure | ½–½ | Brejnik | Letni Praha 2022 | Caro-Kann Defense: Exchange Variation | |
| Jul 28, 2022 | Jirasko | 1–0 | Brejnik | open-a | Caro-Kann Defense: Endgame Variation | |
| Jul 27, 2022 | Brejnik | ½–½ | Neuman | open-a | Slav Defense: Exchange Variation | |
| Jul 23, 2022 | Brejnik | 0–1 | Stachowiak | open-a | Benko Gambit Accepted: Fully Accepted Variation | |
| Jul 21, 2022 | Brejnik | ½–½ | Ret | rapid | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch | |
| Jul 21, 2022 | Brejnik | 1–0 | Melichar | rapid | Indian Defense: Budapest Defense, Rubinstein Variation | |
| Jul 21, 2022 | Brejnik | 0–1 | Schatz | rapid | Benko Gambit Accepted: Fully Accepted Variation | |
| Jul 21, 2022 | Postl | 0–1 | Brejnik | rapid | Caro-Kann Defense: Main Line | |
| Jul 21, 2022 | Ibrahim | ½–½ | Brejnik | rapid | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jul 21, 2022 | Dolensky | ½–½ | Brejnik | rapid | Caro-Kann Defense: Exchange Variation | |
| Jul 20, 2022 | Brejnik | 1–0 | Sindler | rapid | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Jul 20, 2022 | Brejnik | 0–1 | Kraus | rapid | Benoni Defense: Knight's Tour Variation | |
| Jul 20, 2022 | Chubar | 0–1 | Brejnik | rapid | London System: Poisoned Pawn Variation | |
| Jun 25, 2022 | Brejnik | 0–1 | Hollan | Teplice 2022 Ɩ 18. - 26.06.2022 Ɩ Start 3 pm. Ɩ Teplice Chess Club | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Jun 19, 2022 | Fridman | 1–0 | Brejnik | Teplice 2022 Ɩ 18. - 26.06.2022 Ɩ Start 3 pm. Ɩ Teplice Chess Club | Caro-Kann Defense: Advance Variation, Tal Variation | |
| — | Brejnik | 1–0 | Jiricek | Open Letni Praha 2025 | Catalan Opening: Closed | |
| — | Brejnik | 1–0 | Medhvansh Madeti | Open Letni Praha 2025 | Queen's Gambit Declined | |
| — | Brejnik | 1–0 | Sokolovsky | Open Letni Praha 2025 | Grünfeld Defense: Exchange Variation, Seville Variation | |
| — | Brejnik | ½–½ | Dobrovolsky | Open Letni Praha 2025 | Queen's Gambit Declined: Austrian Defense | |
| — | Sedlak | 0–1 | Brejnik | Open Letni Praha 2025 | King's Indian Attack: French Variation | |
| — | Taborsky | 1–0 | Brejnik | Open Letni Praha 2025 | Bogo-Indian Defense: Retreat Variation | |
| — | Mrinmoy Rajkhowa | ½–½ | Brejnik | Open Letni Praha 2025 | Caro-Kann Defense: Maróczy Variation | |
| — | Davidek | ½–½ | Brejnik | Open Letni Praha 2025 | Caro-Kann Defense: Endgame Offer | |
| — | Mrazek | 0–1 | Brejnik | Open Letni Praha 2025 | English Opening: Agincourt Defense | |