| Jan 5, 2026 | Soellig | 0–1 | Zweigait | Runde 7: Soellig, Martin - Zweigait, Leon | Sicilian Defense: Closed | |
| Jan 4, 2026 | Weinreich | 0–1 | Zweigait | Runde 6: Weinreich, Knut - Zweigait, Leon | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jan 4, 2026 | Zweigait | 1–0 | Buecklers | Runde 5: Zweigait, Leon - Buecklers, Martin | Modern Defense: Standard Line | |
| Jan 3, 2026 | Kieselbach | 1–0 | Zweigait | Runde 4: Kieselbach, Jannik - Zweigait, Leon | Sicilian Defense: Alapin Variation | |
| Jan 3, 2026 | Zweigait | 1–0 | Nolting | Runde 3: Zweigait, Leon - Nolting, Dennis | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Jan 2, 2026 | Bruns | 1–0 | Zweigait | Runde 2: Bruns, Kai-Christian - Zweigait, Leon | Sicilian Defense: Delayed Alapin Variation | |
| Jan 2, 2026 | Zweigait | 1–0 | Rose | Runde 1: Zweigait, Leon - Rose, Simeon | Italian Game: Classical Variation, Greco Gambit, Modern Line | |
| Dec 30, 2025 | Haug | 1–0 | Zweigait | DVM U20 2025 | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Dec 29, 2025 | Humbert | 0–1 | Zweigait | DVM U20 2025 | Sicilian Defense: French Variation | |
| Dec 29, 2025 | Zweigait | 0–1 | Melestean | DVM U20 2025 | Italian Game: Classical Variation, Greco Gambit | |
| Dec 28, 2025 | Zweigait | ½–½ | Beyer | DVM U20 2025 | French Defense: Two Knights Variation | |
| Dec 27, 2025 | Zweigait | 1–0 | Kittel | DVM U20 2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | |
| Dec 27, 2025 | Braeutigam | 1–0 | Zweigait | DVM U20 2025 | Nimzo-Indian Defense: Kmoch Variation | |
| Jun 14, 2025 | Zweigait | 1–0 | Uhlmann | ODJM A 2025 | Sicilian Defense: Löwenthal Variation | |
| Jun 13, 2025 | Kraus | 1–0 | Zweigait | ODJM A 2025 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | |
| Jun 12, 2025 | Zweigait | 0–1 | Meiwes | ODJM A 2025 | Caro-Kann Defense: Two Knights Attack | |
| Jun 11, 2025 | Zweigait | 1–0 | Bergmann | ODJM A 2025 | Sicilian Defense: Kalashnikov Variation | |
| Jun 11, 2025 | Meyer | 0–1 | Zweigait | ODJM A 2025 | King's Indian Attack: Spassky Variation | |
| Jun 10, 2025 | Zweigait | 0–1 | Zhang | ODJM A 2025 | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Jun 9, 2025 | Weber | 1–0 | Zweigait | ODJM A 2025 | King's Indian Attack: Spassky Variation | |
| Jun 8, 2025 | Zweigait | 1–0 | Friedhoff | ODJM A 2025 | Petrov's Defense: Modern Attack, Center Variation | |
| Jun 8, 2025 | Andresen | ½–½ | Zweigait | ODJM A 2025 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Apr 18, 2025 | Wilmink | 0–1 | Zweigait | Runde 9: Wilmink, Anna - Zweigait, Leon | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Apr 16, 2025 | Zweigait | 1–0 | Freise | Runde 7: Zweigait, Leon - Freise, Linus | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Apr 16, 2025 | Kieselbach | 1–0 | Zweigait | Runde 6: Kieselbach, Marvin - Zweigait, Leon | Sicilian Defense: French Variation | |
| Apr 15, 2025 | Zweigait | 1–0 | Carstens | Runde 5: Zweigait, Leon - Carstens, Finja | Scandinavian Defense: Main Line | |
| Apr 14, 2025 | Beckmann | ½–½ | Zweigait | Runde 4: Beckmann, Jonathan - Zweigait, Leon | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Apr 13, 2025 | Pac | 0–1 | Zweigait | Runde 2: Pac, Maksym - Zweigait, Leon | Rapport-Jobava System | |
| Apr 12, 2025 | Zweigait | 1–0 | Middelberg | Runde 1: Zweigait, Leon - Middelberg, Simon | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Apr 11, 2025 | Zweigait | 1–0 | Kieselbach | Runde 8: Zweigait, Leon - Kieselbach, Jannik | Italian Game: Classical Variation, Greco Gambit | |
| Apr 11, 2025 | Zweigait | 0–1 | Sieber | Runde 3: Zweigait, Leon - Sieber, Bert | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jan 5, 2025 | Rieping | ½–½ | Zweigait | Round 7: Rieping, Lea - Zweigait, Leon | Rapport-Jobava System | |
| Jan 4, 2025 | Zweigait | 0–1 | Lebiedz | Round 6: Zweigait, Leon - Lebiedz, Oliver | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jan 4, 2025 | Belakhin | ½–½ | Zweigait | Round 5: Belakhin, Alexander - Zweigait, Leon | Nimzo-Indian Defense: St. Petersburg Variation | |
| Jan 3, 2025 | Zweigait | 0–1 | Hilker | Round 4: Zweigait, Leon - Hilker, Bjoern | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jan 3, 2025 | Becker | ½–½ | Zweigait | Round 3: Becker, Stefan - Zweigait, Leon | King's Indian Attack: Spassky Variation | |
| Jan 2, 2025 | Zweigait | 1–0 | Renner | Round 2: Zweigait, Leon - Renner, Kai | Dutch Defense: Queen's Knight Variation | |
| Jan 2, 2025 | Schumann | 0–1 | Zweigait | Round 1: Schumann, Steffen - Zweigait, Leon | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jan 7, 2023 | Wilmink | 1–0 | Zweigait | Lower Saxony Championship | A | Sicilian Defense: French Variation, Normal | |
| Jan 5, 2023 | Kurt | 1–0 | Zweigait | Lower Saxony Championship | A | Sicilian Defense: Four Knights Variation, Exchange Variation | |
