| May 2, 2026 | Busa | 1–0 | Elferink | Round 9: Busa, Ryan - Elferink, Leon | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| May 2, 2026 | Elferink | 1–0 | John | Round 8: Elferink, Leon - John, Ryan | Sicilian Defense: Moscow Variation, Main Line | |
| May 2, 2026 | Elferink | 0–1 | Kovalskyy | Round 4: Elferink, Leon - Kovalskyy, Alicia | Sicilian Defense: Moscow Variation, Main Line | |
| May 2, 2026 | Wunnink | 1–0 | Elferink | Round 3: Wunnink, Michael - Elferink, Leon | Ruy Lopez: Open, Howell Attack | |
| Jul 30, 2025 | Grooten | 1–0 | Elferink | Round 9: Grooten, Herman - Elferink, Leon | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Jul 29, 2025 | Elferink | ½–½ | Zecha | Round 8: Elferink, Leon - Zecha, Oscar | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jul 28, 2025 | Drugmand | 0–1 | Elferink | Round 7: Drugmand, Benoit - Elferink, Leon | Scotch Game: Mieses Variation | |
| Jul 27, 2025 | Elferink | ½–½ | Van Kuijk | Round 6: Elferink, Leon - Van Kuijk, Vadim | Caro-Kann Defense: Exchange Variation | |
| Jul 26, 2025 | Wink | 1–0 | Elferink | Round 5: Wink, Luka - Elferink, Leon | Ruy Lopez: Morphy Defense | |
| Jul 25, 2025 | Elferink | 0–1 | Ritzerveld | Round 4: Elferink, Leon - Ritzerveld, Noah | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jul 24, 2025 | Elferink | ½–½ | Labruyere | Round 3: Elferink, Leon - Labruyere, Roger | Caro-Kann Defense: Exchange Variation | |
| Jul 23, 2025 | Nemegeer | ½–½ | Elferink | Round 2: Nemegeer, Arne - Elferink, Leon | Italian Game: Classical Variation, Greco Gambit | |
| May 2, 2025 | Elferink | 1–0 | Blok | Round 7: Elferink, Leon - Blok, Xaveer | King's Pawn Game | |
| May 1, 2025 | Elferink | 0–1 | Ponomarev | Round 6: Elferink, Leon - Ponomarev, Ivan | Sicilian Defense: Delayed Alapin Variation | |
| Apr 30, 2025 | Kleibeuker | 1–0 | Elferink | Round 5: Kleibeuker, Mika - Elferink, Leon | Bogo-Indian Defense: Retreat Variation | |
| Apr 29, 2025 | Elferink | 0–1 | Leorato | Round 4: Elferink, Leon - Leorato, Imanol | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Apr 28, 2025 | Labruyere | 1–0 | Elferink | Round 3: Labruyere, Roger - Elferink, Leon | Ruy Lopez: Open, Main Line | |
| Apr 27, 2025 | Elferink | 1–0 | Rogozyanskiy | Round 2: Elferink, Leon - Rogozyanskiy, Alexander | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Apr 26, 2025 | Van Hesselingen | ½–½ | Elferink | Round 1: Van Hesselingen, Guido - Elferink, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| May 12, 2024 | Elferink | 1–0 | Dengiz | Round 6: Elferink, Leon - Dengiz, Furkan | Caro-Kann Defense: Tartakower Variation | |
| May 12, 2024 | Elferink | 1–0 | De Jong | Round 4: Elferink, Leon - De Jong, Ti | Ruy Lopez: Open | |
| May 12, 2024 | Koelmans | ½–½ | Elferink | Round 3: Koelmans, Jan Willem - Elferink, Leon | Queen's Pawn Game: Colle System | |
| May 12, 2024 | De Jong | 1–0 | Elferink | Round 5: De Jong, Lode - Elferink, Leon | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| — | Elferink | 1–0 | Breider | Round 2: Elferink, Leon - Breider, Jayden | Sicilian Defense: Moscow Variation, Main Line | |
| — | Elferink | ½–½ | Van Harten | Round 4: Elferink, Leon - Van Harten, Wout | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| — | Elferink | 1–0 | Vogels | Round 7: Elferink, Leon - Vogels, Mathijs | Ruy Lopez: Classical Variation, Central Variation | |
| — | Elferink | 0–1 | Frederiks | Round 8: Elferink, Leon - Frederiks, Jesse | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| — | Van Haaften | 0–1 | Elferink | Round 3: Van Haaften, Jelle - Elferink, Leon | Ruy Lopez: Morphy Defense | |
| — | Thijssen | ½–½ | Elferink | Round 5: Thijssen, Freek - Elferink, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Koppenens | ½–½ | Elferink | Round 6: Koppenens, Oscar - Elferink, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Hagen | 0–1 | Elferink | Round 9: Hagen, Carlijn - Elferink, Leon | Queen's Pawn Game: Accelerated London System | |
