| Oct 5, 2025 | Tietz | ½–½ | Grossmann | Deutsche Ländermeisterschaft 2025 | French Defense: Winawer Variation, Bogoljubow Variation | |
| Oct 4, 2025 | Grossmann | ½–½ | Eberle | Deutsche Ländermeisterschaft 2025 | Sicilian Defense: Najdorf Variation, English Attack | |
| Oct 3, 2025 | Apel | 1–0 | Grossmann | Deutsche Ländermeisterschaft 2025 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Oct 3, 2025 | Grossmann | 0–1 | Terlouw | Deutsche Ländermeisterschaft 2025 | Sicilian Defense: Lasker-Pelikan Variation | |
| Oct 2, 2025 | Mueller | 0–1 | Grossmann | Deutsche Ländermeisterschaft 2025 | French Defense: Winawer Variation, Classical Variation | |
| Oct 1, 2025 | Grossmann | 0–1 | Sieber | Deutsche Ländermeisterschaft 2025 | Sicilian Defense: Kan Variation, Wing Attack, Fianchetto Variation | |
| Oct 1, 2025 | Belin | 1–0 | Grossmann | Deutsche Ländermeisterschaft 2025 | French Defense: Tarrasch Variation, Chistyakov Defense | |
| May 23, 2025 | Voicu-Jagodzinsky | 1–0 | Grossmann | Round 9: Voicu-Jagodzinsky, Carmen - Grossmann, Piet | King's Indian Attack: Sicilian Variation | |
| May 22, 2025 | Grossmann | 0–1 | Besou | Round 8: Grossmann, Piet - Besou, Hussain | Sicilian Defense: Najdorf Variation, English Attack | |
| May 21, 2025 | Herbrig | ½–½ | Grossmann | Round 7: Herbrig, Alexander - Grossmann, Piet | Catalan Opening: Open Defense, Classical Line | |
| May 21, 2025 | Grossmann | 1–0 | Philipp | Round 6: Grossmann, Piet - Philipp, Mathias | Semi-Slav Defense: Chigorin Defense | |
| May 20, 2025 | Steffens | 0–1 | Grossmann | Round 5: Steffens, Olaf - Grossmann, Piet | Rapport-Jobava System, with e6 | |
| May 19, 2025 | Grossmann | 0–1 | Ollenberger | Round 4: Grossmann, Piet - Ollenberger, Roland | Sicilian Defense: Dragon Variation, Yugoslav Attack, Sosonko Variation | |
| May 19, 2025 | Kocharin | 1–0 | Grossmann | Round 3: Kocharin, Timur - Grossmann, Piet | English Opening: Mikenas-Carls Variation | |
| May 18, 2025 | Krastev | 1–0 | Grossmann | Round 2: Krastev, Alexander - Grossmann, Piet | French Defense: Knight Variation | |
| May 17, 2025 | Grossmann | ½–½ | Koepke | Round 1: Grossmann, Piet - Koepke, Christian | Sicilian Defense: Classical Variation, Sozin Attack | |
| Aug 25, 2024 | Gramb | ½–½ | Grossmann | Round 9: Gramb, Marius - Grossmann, Piet | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Aug 24, 2024 | Grossmann | ½–½ | Maier | Round 8: Grossmann, Piet - Maier, Alexander | Nimzowitsch Defense: French Connection | |
| Aug 23, 2024 | Heinrich | 1–0 | Grossmann | Round 7: Heinrich, John - Grossmann, Piet | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Aug 22, 2024 | Grossmann | 0–1 | Rosner | Round 6: Grossmann, Piet - Rosner, Jonas | Queen's Gambit Declined: Normal Defense | |
| Aug 22, 2024 | Grossmann | 1–0 | Stricker | Round 5: Grossmann, Piet - Stricker, Florian | King's Indian Defense: Sämisch Variation | |
| Aug 21, 2024 | Syrov | 1–0 | Grossmann | Round 4: Syrov, Arkadi - Grossmann, Piet | French Defense: Advance Variation, Euwe Variation | |
| Aug 20, 2024 | Petrovskyi | 1–0 | Grossmann | Round 3: Petrovskyi, Vadym - Grossmann, Piet | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Aug 20, 2024 | Grossmann | 1–0 | Gerlach | Round 2: Grossmann, Piet - Gerlach, Felix | Sicilian Defense: Kalashnikov Variation | |
| Aug 19, 2024 | Lutz | 0–1 | Grossmann | Round 1: Lutz, Ruben - Grossmann, Piet | Torre Attack: Classical Defense, Nimzowitsch Variation | |
| Jul 17, 2024 | Herbrig | * | Grossmann | Round 2: Herbrig, Alexander - Grossmann, Piet | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Oct 5, 2023 | Fuhrmann | 1–0 | Großmann | Deutsche Ländermeisterschaft 2023 | French Defense: Exchange Variation | |
| Oct 4, 2023 | Großmann | 1–0 | Herter | Deutsche Ländermeisterschaft 2023 | Italian Game: Scotch Gambit, Max Lange Attack | |
| Oct 3, 2023 | Großmann | 0–1 | Beyer | Deutsche Ländermeisterschaft 2023 | French Defense: MacCutcheon Variation, Exchange Variation | |
| Oct 3, 2023 | Kalina | 1–0 | Großmann | Deutsche Ländermeisterschaft 2023 | Benoni Defense: Czech Benoni Defense | |
| Oct 2, 2023 | Großmann | ½–½ | Bock | Deutsche Ländermeisterschaft 2023 | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 | |
| Oct 1, 2023 | Großmann | ½–½ | Basovskiy | Deutsche Ländermeisterschaft 2023 | Caro-Kann Defense: Classical Variation | |
| Oct 1, 2023 | Musiolik | 1–0 | Großmann | Deutsche Ländermeisterschaft 2023 | French Defense: Advance Variation, Main Line | |
| Oct 6, 2021 | Musiolik | 1–0 | Großmann | Deutsche Ländermeisterschaft 2021 | French Defense: Advance Variation, Main Line | |
| Oct 5, 2021 | Großmann | 1–0 | Post | Deutsche Ländermeisterschaft 2021 | Sicilian Defense: Najdorf Variation, English Attack | |
| Oct 4, 2021 | Großmann | ½–½ | Geltz | Deutsche Ländermeisterschaft 2021 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak Variation | |
| Oct 4, 2021 | Müller | ½–½ | Großmann | Deutsche Ländermeisterschaft 2021 | French Defense: Steiner Variation | |
| Oct 3, 2021 | Bornholdt | ½–½ | Großmann | Deutsche Ländermeisterschaft 2021 | Nimzo-Indian Defense: Kmoch Variation | |
| Oct 2, 2021 | Großmann | 0–1 | Weihrauch | Deutsche Ländermeisterschaft 2021 | Scotch Game | |
| Oct 2, 2021 | Richter | 1–0 | Großmann | Deutsche Ländermeisterschaft 2021 | Nimzo-Indian Defense: Three Knights Variation | |
| — | Grossmann | ½–½ | Mester | Round 3: Grossmann, Piet - Mester, Philipp | Ruy Lopez: Morphy Defense, Cozio Defense | |
| — | Schulze | 1–0 | Grossmann | Round 4: Schulze, Lara - Grossmann, Piet | French Defense: Advance Variation, Euwe Variation | |
