| May 30, 2026 | Lueg | 0–1 | Optendrenk | ODJM C 2026 | Semi-Slav Defense | |
| May 29, 2026 | Optendrenk | ½–½ | Seidel | ODJM C 2026 | Caro-Kann Defense: Advance Variation, Short Variation | |
| May 28, 2026 | Lux | ½–½ | Optendrenk | ODJM C 2026 | Bishop's Opening: Vienna Hybrid | |
| May 27, 2026 | Optendrenk | 1–0 | Mueller | ODJM C 2026 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| May 27, 2026 | Lipp | 0–1 | Optendrenk | ODJM C 2026 | English Opening: King's English Variation | |
| May 26, 2026 | Optendrenk | 0–1 | Anzinger | ODJM C 2026 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| May 25, 2026 | Prigandt | ½–½ | Optendrenk | ODJM C 2026 | English Opening: King's English Variation, Taimanov Variation | |
| May 24, 2026 | Optendrenk | 1–0 | de Cauter | ODJM C 2026 | Sicilian Defense: Hyperaccelerated Dragon | |
| May 24, 2026 | Goehrke | 1–0 | Optendrenk | ODJM C 2026 | Scotch Game: Scotch Gambit, London Defense | |
| — | Optendrenk | 1–0 | Quinten Bonsen | Round 2: Optendrenk, Frederik - Quinten Bonsen | French Defense: Advance Variation, Milner-Barry Gambit | |
| — | Optendrenk | 0–1 | Vincent Huang | Round 4: Optendrenk, Frederik - Vincent Huang | Sicilian Defense: Modern Variations | |
| — | Optendrenk | ½–½ | Sjoerd Oelmeijer | Round 6: Optendrenk, Frederik - Sjoerd Oelmeijer | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Optendrenk | * | Sjoerd Oelmeijer | Round 6: Optendrenk, Frederik - Sjoerd Oelmeijer | ? | |
| — | Optendrenk | 1–0 | Nimai Bharos | Round 8: Optendrenk, Frederik - Nimai Bharos | Sicilian Defense: Kan Variation | |
| — | Optendrenk | 0–1 | Rico Oosthoek | Round 10: Optendrenk, Frederik - Rico Oosthoek | Caro-Kann Defense: Advance Variation, Short Variation | |
| — | Optendrenk | ½–½ | Melvin Mariappan | Round 12: Optendrenk, Frederik - Melvin Mariappan | Caro-Kann Defense: Advance Variation, Short Variation | |
| — | Jasper Veldhuis | ½–½ | Optendrenk | Round 3: Jasper Veldhuis - Optendrenk, Frederik | King's Gambit Accepted: Fischer Defense, Spanish Variation | |
| — | Raj Van den Brink | 0–1 | Optendrenk | Round 5: Raj Van den Brink - Optendrenk, Frederik | Scotch Game: Classical Variation | |
| — | Ryoga Okita | 1–0 | Optendrenk | Round 7: Ryoga Okita - Optendrenk, Frederik | Scotch Game: Potter Variation | |
| — | Yuan Li Ma | 0–1 | Optendrenk | Round 9: Yuan Li Ma - Optendrenk, Frederik | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| — | Dhanesh Bajnath | 1–0 | Optendrenk | Round 11: Dhanesh Bajnath - Optendrenk, Frederik | Scotch Game: Potter Variation | |
| — | Kyan Kolah-Chi | 0–1 | Optendrenk | Round 13: Kyan Kolah-Chi - Optendrenk, Frederik | Rapport-Jobava System | |
