| Jun 23, 2026 | Kozdon | 0–1 | Hobza | Round 5: Kozdon, Marek - Hobza, Richard | Slav Defense: Exchange Variation | |
| Jun 23, 2026 | Dudkova | 0–1 | Kozdon | Round 4: Dudkova, Josefina - Kozdon, Marek | Yusupov-Rubinstein System | |
| Jun 23, 2026 | Kozdon | 1–0 | Hrdlicka | Round 2: Kozdon, Marek - Hrdlicka, Jan | King's Indian Defense: Orthodox Variation | |
| Sep 21, 2025 | Kozdon | ½–½ | Stary | MČR juniorů a juniorek v rapid šachu 2025 | Bogo-Indian Defense: Nimzowitsch Variation | |
| Sep 21, 2025 | Pogorelskiy | 0–1 | Kozdon | MČR juniorů a juniorek v rapid šachu 2025 | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Sep 21, 2025 | Kozdon | ½–½ | Garabik | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Gambit Declined: Exchange Variation | |
| Sep 20, 2025 | Andrle | ½–½ | Kozdon | MČR juniorů a juniorek v rapid šachu 2025 | English Opening: Symmetrical Variation, Hedgehog Defense | |
| Sep 20, 2025 | Kozdon | 1–0 | Svadlenka | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Indian Defense: Kasparov-Petrosian Variation, Andersson Variation | |
| Sep 20, 2025 | Mikhno | 1–0 | Kozdon | MČR juniorů a juniorek v rapid šachu 2025 | Nimzo-Indian Defense: Sämisch Variation | |
| Sep 20, 2025 | Kozdon | 1–0 | Jun | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Sep 20, 2025 | Krizan | 0–1 | Kozdon | MČR juniorů a juniorek v rapid šachu 2025 | Sicilian Defense: Kan Variation | |
| Sep 20, 2025 | Kozdon | 0–1 | Jun | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Kozdon | 1–0 | Sprusansky | Skalica B | Queen's Gambit Declined: Marshall Defense | |
| — | Kozdon | 0–1 | Hasala | skalica b | King's Indian Defense: Petrosian Variation, Stein Defense | |
| — | Kozdon | ½–½ | Hanzel | Skalica B | Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack | |
| — | Kozdon | ½–½ | Trejbal | skalica b | Benoni Defense: Classical Variation, Czerniak Defense, Tal Line | |
| — | Kozdon | 1–0 | Visvader | skalica b | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Myachin | 1–0 | Kozdon | Skalica B | Sicilian Defense: Delayed Alapin Variation | |
| — | Maryniok | 0–1 | Kozdon | Skalica B | Nimzo-Indian Defense: Sämisch Variation | |
| — | Krisicova | 0–1 | Kozdon | Skalica B | French Defense: Chigorin Variation | |
| — | Boff | ½–½ | Kozdon | skalica b | Sicilian Defense: Kramnik Variation | |
