| Jul 24, 2026 | Markus | * | De Wit | Round 4: Markus, John Raymond - De Wit, Jim | ? | |
| Jul 23, 2026 | De Wit | * | Janssen | Round 3: De Wit, Jim - Janssen, Toon | ? | |
| Jul 22, 2026 | Kompaan | * | De Wit | Round 2: Kompaan, Rick - De Wit, Jim | ? | |
| Jul 21, 2026 | De Wit | * | Rishiadithya Murali | Round 1: De Wit, Jim - Rishiadithya Murali | ? | |
| May 16, 2026 | De Wit | 1–0 | Bharos | NK 12 Jeugd 2026 | Sicilian Defense: Closed, Fianchetto Variation | |
| May 16, 2026 | Sajit Nair | 1–0 | De Wit | NK 12 Jeugd 2026 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| May 16, 2026 | De Wit | ½–½ | De Ridder | NK 12 Jeugd 2026 | Czech Defense | |
| May 16, 2026 | De Wit | 0–1 | Suthan | NK 12 Jeugd 2026 | Italian Game: Scotch Gambit, Max Lange Attack | |
| May 15, 2026 | Leenen | 0–1 | De Wit | NK 12 Jeugd 2026 | Queen's Pawn Game: Zukertort Variation | |
| May 15, 2026 | Zhou | ½–½ | De Wit | NK 12 Jeugd 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| May 15, 2026 | Sean | 0–1 | De Wit | NK 12 Jeugd 2026 | Sicilian Defense: Kan Variation, Wing Attack | |
| May 14, 2026 | De Wit | 0–1 | Zhang | NK 12 Jeugd 2026 | Sicilian Defense: Closed | |
| May 14, 2026 | De Wit | 1–0 | Leferink | NK 12 Jeugd 2026 | Italian Game: Classical Variation | |
| May 2, 2026 | Verhoeven | 1–0 | De Wit | Round 1: Verhoeven, Robin - De Wit, Jim | Sicilian Defense: Closed | |
| Apr 30, 2026 | Koppenens | 1–0 | De Wit | Round 9: Koppenens, Oscar - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Maróczy Bind, Geller Line | |
| Apr 29, 2026 | De Wit | 0–1 | Uitermark | Round 8: De Wit, Jim - Uitermark, Imre | French Defense: Rubinstein Variation, Blackburne Defense | |
| Apr 29, 2026 | Tkacenko | 0–1 | De Wit | Round 7: Tkacenko, Kostia - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Normal System | |
| Apr 29, 2026 | De Wit | 1–0 | Mendelsohn | Round 6: De Wit, Jim - Mendelsohn, Saffran | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 | |
| Apr 27, 2026 | Roersma | ½–½ | De Wit | Round 5: Roersma, Dylan - De Wit, Jim | Caro-Kann Defense: Tartakower Variation | |
| Apr 27, 2026 | De Wit | ½–½ | Bergaglia | Round 4: De Wit, Jim - Bergaglia, Roman | Pirc Defense: Classical Variation, Quiet System | |
| Apr 27, 2026 | Cubuk | ½–½ | De Wit | Round 3: Cubuk, Armin - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Venice System | |
| Apr 25, 2026 | Huang | 1–0 | De Wit | Round 2: Huang, Vincent - De Wit, Jim | Grünfeld Defense: Three Knights Variation, Paris Variation | |
| Apr 25, 2026 | De Wit | 0–1 | Lenting | Round 1: De Wit, Jim - Lenting, Roan | Indian Defense: Anti-Nimzo-Indian | |
| — | De Wit | ½–½ | Barbier | Round 3: De Wit, Jim - Barbier, Emma | Scotch Game | |
| — | De Wit | 1–0 | Roy Qiu | Round 6: De Wit, Jim - Roy Qiu | King's Indian Defense: Normal Variation, Rare Defenses | |
| — | De Wit | 1–0 | Van Duuren | Round 7: De Wit, Jim - Van Duuren, Ruth | Slav Defense | |
| — | De Wit | ½–½ | Shaikh | Round 9: De Wit, Jim - Shaikh, Rushaan | Dutch Defense: Hopton Attack | |
| — | Elangkumaran | 1–0 | De Wit | Round 2: Elangkumaran, Anumitra - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Réti System | |
| — | Janssen | 0–1 | De Wit | Round 4: Janssen, Sen - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Normal System | |
| — | Kakrana | 1–0 | De Wit | Round 5: Kakrana, Reyansh - De Wit, Jim | Pirc Defense | |
| — | Nair | 0–1 | De Wit | Round 8: Nair, Pranav Prasobh - De Wit, Jim | Sicilian Defense: O'Kelly Variation, Maróczy Bind | |