| Jun 23, 2026 | Gantner | 1–0 | Ballmann | SUI-chT Reti-Winterthur | French Defense: Tarrasch Variation, Chistyakov Defense | |
| Jun 21, 2026 | Gautier | ½–½ | Gantner | SMM 2026 | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Apr 21, 2026 | Koehalmi-Szabo | 1–0 | Gantner | SMM NLA 2026 | Vienna Game: Falkbeer Variation | |
| Mar 17, 2026 | Gantner | 0–1 | Stijve | SUI-chT Reti-Luzern | Ruy Lopez: Fianchetto Defense | |
| Mar 7, 2026 | Gantner | 1–0 | Lehmann | SGM | Sicilian Defense: Alapin Variation, Stoltz Attack | |
| Sep 28, 2025 | Mutschnik | 0–1 | Gantner | SMM Rd 8+9 | Sicilian Defense: Najdorf Variation, English Attack | |
| Sep 27, 2025 | Gantner | 1–0 | Stijve | SMM Rd 8+9 | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Jul 20, 2025 | Kurmann | ½–½ | Gantner | Round 9: Kurmann, Oliver - Gantner, Matthias | Rapport-Jobava System | |
| Jul 19, 2025 | Gantner | 0–1 | Peng | Round 8: Gantner, Matthias - Peng, Li Min | Sicilian Defense: Nimzowitsch Variation, Exchange Variation | |
| Jul 17, 2025 | Gaehwiler | ½–½ | Gantner | Round 6: Gaehwiler, Gabriel - Gantner, Matthias | Zukertort Opening | |
| Jul 16, 2025 | Gantner | 0–1 | Fischer | Round 5: Gantner, Matthias - Fischer, Daniel | Sicilian Defense | |
| Jul 15, 2025 | Bogner | ½–½ | Gantner | Round 4: Bogner, Sebastian - Gantner, Matthias | Ruy Lopez: Morphy Defense | |
| Jul 14, 2025 | Gantner | 1–0 | Mattenberger | Round 3: Gantner, Matthias - Mattenberger, Matthias | Sicilian Defense | |
| Jul 13, 2025 | Fecker | ½–½ | Gantner | Round 2: Fecker, Noah - Gantner, Matthias | Vienna Game: Mieses Variation | |
| Jul 12, 2025 | Gantner | 0–1 | Gallagher | Round 1: Gantner, Matthias - Gallagher, Joseph G. | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jun 22, 2025 | Gantner | 0–1 | Cvitan | SMM Nationalliga A 2025 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 1, 2025 | Kamber | 1–0 | Gantner | Round 7: Kamber, Bruno - Gantner, Matthias | Caro-Kann Defense: Exchange Variation | |
| May 31, 2025 | Gantner | ½–½ | Gemelli | Round 6: Gantner, Matthias - Gemelli,Romain | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| May 31, 2025 | Schmid | 0–1 | Gantner | Round 5: Schmid, Christoph - Gantner, Matthias | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| May 30, 2025 | Gantner | 1–0 | Buettiker | Round 4: Gantner, Matthias - Buettiker, Stephan | Sicilian Defense | |
| May 30, 2025 | Schoenbaechler | 1–0 | Gantner | Round 3: Schoenbaechler, Anselm - Gantner, Matthias | Caro-Kann Defense: Endgame Offer | |
| May 29, 2025 | Gantner | 1–0 | Python | Round 2: Gantner, Matthias - Python, Noe | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 29, 2025 | Bruessow | 0–1 | Gantner | Round 1: Bruessow, Nina - Gantner, Matthias | Caro-Kann Defense: Tartakower Variation | |
| May 28, 2025 | Gantner | 0–1 | Toktomushev | Round 7: Gantner, Matthias - Toktomushev, Teimur | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Apr 27, 2025 | Gantner | ½–½ | Asllani | SUI-chT Reti-Nyon | Sicilian Defense: Nimzowitsch Variation, Main Line | |
| Apr 6, 2025 | Toktomushev | ½–½ | Gantner | SMM 2025 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Apr 5, 2025 | Gantner | 0–1 | Mantovani | SMM 2025 | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Mar 16, 2025 | Schwander | 0–1 | Gantner | SMM 2025 | English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense | |
| Oct 13, 2024 | Maeser | ½–½ | Gantner | SMM Nationalliga A 2024 | Sicilian Defense: Moscow Variation | |
| Oct 12, 2024 | Gantner | 1–0 | Levacic | SMM Nationalliga A 2024 | Modern Defense: Standard Defense | |
| Aug 25, 2024 | Gantner | 1–0 | Rusev | SUI-chT Reti-Luzern | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 24, 2024 | Mutschnik | 1–0 | Gantner | SUI-chT Zuerich-Reti | Ruy Lopez: Exchange Variation, Normal Variation | |
| Jul 21, 2024 | Kaczmarczyk | ½–½ | Gantner | Round 9: Kaczmarczyk, Dennis - Gantner, Matthias | Trompowsky Attack | |
| Jul 20, 2024 | Siebrecht | 0–1 | Gantner | Round 8: Siebrecht, Sebastian - Gantner, Matthias | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Jul 19, 2024 | Gantner | 0–1 | Petrov | Round 7: Gantner, Matthias - Petrov, Nikita | Sicilian Defense: French Variation | |
| Jul 18, 2024 | Gantner | 1–0 | Joie | Round 6: Gantner, Matthias - Joie, Sebastien | French Defense: Advance Variation, Euwe Variation | |
| Jul 17, 2024 | Dijkstra | 0–1 | Gantner | Round 5: Dijkstra, Hidde - Gantner, Matthias | Italian Game: Two Knights Defense, Ulvestad Variation | |
| Jul 16, 2024 | Gantner | 1–0 | Mauron | Round 4: Gantner, Matthias - Mauron, Pierre | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jul 13, 2024 | Tschopp | 1–0 | Gantner | Round 1: Tschopp,Olivier - Gantner, Matthias | Italian Game: Classical Variation, Giuoco Pianissimo, Albin Variation | |
| May 26, 2024 | Egle | 0–1 | Gantner | SUI-chT Bodan-Reti | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| May 12, 2024 | Retti | 0–1 | Gantner | Bundesturnier | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 11, 2024 | Gantner | ½–½ | Willems | Bundesturnier | Caro-Kann Defense: Advance Variation | |
| May 11, 2024 | Gantner | 0–1 | Bauer | Bundesturnier | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 10, 2024 | Gantner | 1–0 | Toenz | Bundesturnier | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 10, 2024 | Drechsler | 0–1 | Gantner | Bundesturnier | Queen's Pawn Game: Colle System, Traditional Colle | |
| May 9, 2024 | Gantner | 1–0 | Ernst | Bundesturnier | French Defense: Tarrasch Variation, Closed Variation | |
| May 9, 2024 | Musaelyan | ½–½ | Gantner | Bundesturnier | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 14, 2024 | Gantner | 0–1 | Burri | SUI-chT Reti-Geneve | Sicilian Defense: Moscow Variation | |
| Mar 10, 2024 | Breder | ½–½ | Gantner | SUI-chT Riehen-Reti | Ruy Lopez: Exchange Variation, Normal Variation | |
| Feb 24, 2024 | Gantner | 1–0 | Schlegel | Schweizerische Gruppenmeisterschaft 2024 | Sicilian Defense: Moscow Variation | |
| — | Gantner | 1–0 | Schlegel | SMM 2025 | Sicilian Defense: Alapin Variation, Barmen Defense | |