| May 17, 2026 | Petrasek | 0–1 | Ornet | Round 6: Petrasek, David - Ornet, Tomas | Italian Game: Giuoco Piano | |
| May 17, 2026 | Petrasek | 0–1 | Sibl | Round 4: Petrasek, David - Sibl, Vaclav | Philidor Defense: Lion Variation | |
| May 17, 2026 | Misek | 1–0 | Petrasek | Round 3: Misek, Jan - Petrasek, David | Four Knights Game: Spanish Variation, Classical Variation | |
| May 17, 2026 | Petrasek | 1–0 | Smrcka | Round 2: Petrasek, David - Smrcka, Jan | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 16, 2026 | Petrasek | ½–½ | Anokhin | Round 13: Petrasek, David - Anokhin, Daniel | Sicilian Defense: Old Sicilian | |
| May 16, 2026 | Hamous | 0–1 | Petrasek | Round 12: Hamous, Jiri - Petrasek, David | Four Knights Game: Italian Variation | |
| May 16, 2026 | Petrasek | 0–1 | Ugrenovich | Round 10: Petrasek, David - Ugrenovich, Jaroslav | Sicilian Defense: Bowdler Attack | |
| May 16, 2026 | Macho | 1–0 | Petrasek | Round 8: Macho, Miloslav - Petrasek, David | English Opening: King's English Variation | |
| May 16, 2026 | Petrasek | 0–1 | Ugrenovich | Round 7: Petrasek, David - Ugrenovich, George | Sicilian Defense: Bowdler Attack | |
| May 16, 2026 | Benes | ½–½ | Petrasek | Round 6: Benes, Jan Jeronym - Petrasek, David | Queen's Gambit Accepted: Normal Variation | |
| May 16, 2026 | Petrasek | 1–0 | Bulgaru | Round 5: Petrasek, David - Bulgaru, Andrej | Petrov's Defense: Stafford Gambit | |
| May 16, 2026 | Janousek | 1–0 | Petrasek | Round 4: Janousek, Ladislav - Petrasek, David | English Opening: King's English Variation | |
| May 16, 2026 | Petrasek | 0–1 | Ondrejat | Round 3: Petrasek, David - Ondrejat, Miroslav | Sicilian Defense: Modern Variations | |
| May 16, 2026 | Pham | 0–1 | Petrasek | Round 2: Pham, Minh Tiep - Petrasek, David | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| May 16, 2026 | Petrasek | 0–1 | Filindash | Round 1: Petrasek, David - Filindash, Nikita | Pirc Defense | |
| May 16, 2026 | sourozenci Kůsovi | 1–0 | Petrasek | Round 1: sourozenci Kůsovi - Petrasek, David | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |