| Apr 27, 2026 | Blok | 0–1 | Guillaumond | Round 3: Blok, Lukas - Guillaumond, Matthieu | English Opening: Symmetrical Variation, Botvinnik System | |
| Apr 25, 2026 | Guillaumond | 1–0 | Uitermark | Round 2: Guillaumond, Matthieu - Uitermark, Imre | Sicilian Defense: Lasker-Pelikan Variation | |
| Apr 25, 2026 | Roersma | 0–1 | Guillaumond | Round 1: Roersma, Dylan - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, English Attack | |
| Apr 12, 2026 | Guillaumond | ½–½ | Zhou | Round 8: Guillaumond, Matthieu - Zhou, Yanyang | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Apr 12, 2026 | Botter | ½–½ | Guillaumond | Round 7: Botter, Simon - Guillaumond, Matthieu | Queen's Gambit Declined: Exchange Variation | |
| Apr 12, 2026 | Guillaumond | 1–0 | Lenting | Round 6: Guillaumond, Matthieu - Lenting, Roan | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Apr 12, 2026 | Teianu | ½–½ | Guillaumond | Round 5: Teianu, Sabin - Guillaumond, Matthieu | Queen's Gambit Declined: Barmen Variation | |
| Apr 12, 2026 | Guillaumond | 1–0 | Pathak | Round 4: Guillaumond, Matthieu - Pathak, Raghav | Caro-Kann Defense: Two Knights Attack | |
| Jul 30, 2025 | Boersma | ½–½ | Guillaumond | Round 9: Boersma, Jan - Guillaumond, Matthieu | Sicilian Defense: Closed, Traditional | |
| Jul 29, 2025 | Guillaumond | 0–1 | Asefi | Round 8: Guillaumond, Matthieu - Asefi, Zaheeruddeen | Pirc Defense: Byrne Variation | |
| Jul 28, 2025 | Frederiks | ½–½ | Guillaumond | Round 7: Frederiks, Jesse - Guillaumond, Matthieu | Indian Defense | |
| Jul 27, 2025 | Guillaumond | ½–½ | Ghilon Etienne | Round 6: Guillaumond, Matthieu - Ghilon Etienne | Scotch Game: Mieses Variation | |
| Jul 26, 2025 | Demiddele | 0–1 | Guillaumond | Round 5: Demiddele, Kevin - Guillaumond, Matthieu | English Opening: Symmetrical Variation, Botvinnik System | |
| Jul 25, 2025 | Guillaumond | ½–½ | Ebels | Round 4: Guillaumond, Matthieu - Ebels, Theo | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 24, 2025 | Van t Veld | 0–1 | Guillaumond | Round 3: Van t Veld, Menno - Guillaumond, Matthieu | Queen's Pawn Game: Barry Attack, Grünfeld Variation | |
| Jul 23, 2025 | Guillaumond | * | Andriessen | Round 2: Guillaumond, Matthieu - Andriessen, Bart Jan | ? | |
| Jul 22, 2025 | Van Baaren | ½–½ | Guillaumond | Round 1: Van Baaren, Joris - Guillaumond, Matthieu | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| May 30, 2025 | Guillaumond | 0–1 | Ratsma | Round 1: Guillaumond, Matthieu - Ratsma, Midas | Scotch Game: Mieses Variation | |
| May 2, 2025 | Guillaumond | 0–1 | Thijssen | Round 9: Guillaumond, Matthieu - Thijssen, Freek | Scotch Game | |
| May 1, 2025 | Lenting | 0–1 | Guillaumond | Round 8: Lenting, Roan - Guillaumond, Matthieu | Sicilian Defense: Closed, Chameleon Variation | |
| Apr 30, 2025 | Guillaumond | ½–½ | Aravindhan | Round 7: Guillaumond, Matthieu - Aravindhan, Achyuth | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | |
| Apr 30, 2025 | Terlouw | ½–½ | Guillaumond | Round 6: Terlouw, Wouter - Guillaumond, Matthieu | Trompowsky Attack | |
| Apr 29, 2025 | Guillaumond | 1–0 | Botter | Round 5: Guillaumond, Matthieu - Botter, Simon | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | |
| Apr 28, 2025 | Roebers | ½–½ | Guillaumond | Round 3: Roebers, Bregje - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, English Attack | |
| Apr 28, 2025 | Kakrana | 0–1 | Guillaumond | Round 4: Kakrana, Reyansh - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation | |
| Apr 27, 2025 | Guillaumond | 0–1 | Zecha | Round 2: Guillaumond, Matthieu - Zecha, Oscar | Scotch Game: Potter Variation | |
| Apr 26, 2025 | Guillaumond | 1–0 | Luong | Round 1: Guillaumond, Matthieu - Luong, Thao | Scotch Game: Mieses Variation | |
| Jun 26, 2024 | Lukas 2012: Blok | 0–1 | Guillaumond | Round 5: Lukas 2012: Blok - Guillaumond, Matthieu | English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3 | |
| Jun 16, 2024 | Oscar 2012: Koppenens | 1–0 | Guillaumond | Round 7: Oscar 2012: Koppenens - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Jun 16, 2024 | Guillaumond | 1–0 | Luong | Round 2: Guillaumond, Matthieu - Luong, Thao | Ruy Lopez: Classical Variation, Central Variation | |
| Jun 16, 2024 | Dylan 2012: Roersma | 0–1 | Guillaumond | Round 3: Dylan 2012: Roersma - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, English Attack | |
| Jun 16, 2024 | Barbier | 0–1 | Guillaumond | Round 1: Barbier, Sarah - Guillaumond, Matthieu | Sicilian Defense: Bowdler Attack | |
| Jun 15, 2024 | Guillaumond | ½–½ | Aarts | Round 9: Guillaumond, Matthieu - Aarts, Joaquin | Sicilian Defense: Alapin Variation | |
| Jun 15, 2024 | Labruyere | 1–0 | Guillaumond | Round 8: Labruyere, Roger - Guillaumond, Matthieu | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 15, 2024 | Guillaumond | 1–0 | Kshirsagar | Round 7: Guillaumond, Matthieu - Kshirsagar, Pranav | Caro-Kann Defense: Two Knights Attack | |
| Jun 15, 2024 | Duson | ½–½ | Guillaumond | Round 6: Duson, Robin - Guillaumond, Matthieu | King's Indian Defense: Semi-Averbakh System | |
| Jun 15, 2024 | Guillaumond | 1–0 | Van Dijken | Round 5: Guillaumond, Matthieu - Van Dijken, Rex | Pirc Defense: Byrne Variation | |
| Jun 15, 2024 | Guillaumond | 1–0 | Rogozyanskiy | Round 4: Guillaumond, Matthieu - Rogozyanskiy, Alexander | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jun 15, 2024 | Van Roon | 1–0 | Guillaumond | Round 3: Van Roon, Sjoerd - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, English Attack | |
| Jun 15, 2024 | Guillaumond | ½–½ | Teianu | Round 2: Guillaumond, Matthieu - Teianu, Sabin | French Defense: Steinitz Variation, Boleslavsky Variation | |
| May 3, 2024 | De Jong | 0–1 | Guillaumond | Round 9: De Jong, Lode - Guillaumond, Matthieu | King's Indian Defense: Orthodox Variation, Classical System, Neo-Classical Line | |
| May 2, 2024 | Guillaumond | 1–0 | Koppenens | Round 8: Guillaumond, Matthieu - Koppenens, Oscar | Sicilian Defense: Alapin Variation, Barmen Defense, Central Exchange | |
| May 1, 2024 | Lalkota | 0–1 | Guillaumond | Round 7: Lalkota, Sai Pranav Tejas - Guillaumond, Matthieu | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| May 1, 2024 | Guillaumond | 0–1 | Roorda | Round 6: Guillaumond, Matthieu - Roorda, Cas | French Defense: Winawer Variation, Advance Variation | |
| Apr 30, 2024 | Haque | 0–1 | Guillaumond | Round 5: Haque, Nishaaz - Guillaumond, Matthieu | East Indian Defense | |
| Apr 29, 2024 | Guillaumond | 1–0 | Kors | Round 4: Guillaumond, Matthieu - Kors, Siebe | Scotch Game: Lolli Variation | |
| Apr 29, 2024 | Zecha | 1–0 | Guillaumond | Round 3: Zecha, Oscar - Guillaumond, Matthieu | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Apr 28, 2024 | Guillaumond | ½–½ | De Wit | Round 2: Guillaumond, Matthieu - De Wit, Evan | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Apr 27, 2024 | Ngangbam | 1–0 | Guillaumond | Round 1: Ngangbam, Chingthang - Guillaumond, Matthieu | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| May 6, 2023 | Blom | ½–½ | Guillaumond | NJSK 2023 Jeugd B | French Defense: Steiner Variation | |
| May 5, 2023 | Guillaumond | 1–0 | Niemeijer | NJSK 2023 Jeugd B | French Defense: Steinitz Variation, Boleslavsky Variation | |
| May 4, 2023 | Guillaumond | 1–0 | Ponomarev | NJSK 2023 Jeugd B | Sicilian Defense: Alapin Variation, Barmen Defense | |
| May 3, 2023 | Veraart | 0–1 | Guillaumond | NJSK 2023 Jeugd B | Sicilian Defense: Closed | |
| May 2, 2023 | Bakija | 1–0 | Guillaumond | NJSK 2023 Jeugd B | English Opening: Anglo-Indian Defense | |
| May 1, 2023 | Guillaumond | 0–1 | Ritzerveld | NJSK 2023 Jeugd B | Ruy Lopez: Closed | |
| Apr 30, 2023 | Van Arendonk | 1–0 | Guillaumond | NJSK 2023 Jeugd B | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Breyer Variation | |