| Jul 21, 2026 | Birken | 0–1 | Kaliski | Round 5: Birken, Michael - Kaliski, Erwin | French Defense: Exchange Variation | |
| Dec 30, 2025 | Birken | 1–0 | Apel | Round 7: Birken, Michael - Apel, Linus | Ruy Lopez: Closed, Pilnik Variation | |
| Dec 30, 2025 | Niemann | ½–½ | Birken | Round 6: Niemann, Silvio - Birken, Michael | Sicilian Defense: Modern Variations | |
| Dec 29, 2025 | Birken | 1–0 | Scheller | Round 5: Birken, Michael - Scheller, Thomas, Dr. | French Defense: Exchange Variation | |
| Dec 29, 2025 | Petersohn | 1–0 | Birken | Round 4: Petersohn, Sadko - Birken, Michael | Indian Defense: Wade-Tartakower Defense | |
| Dec 28, 2025 | Birken | 1–0 | Bubic | Round 3: Birken, Michael - Bubic, Zoran | Caro-Kann Defense: Classical Variation | |
| Dec 28, 2025 | Lehmann | 0–1 | Birken | Round 2: Lehmann, Georg - Birken, Michael | Sicilian Defense: Alapin Variation | |
| Dec 27, 2025 | Birken | 0–1 | Englert | Round 1: Birken, Michael - Englert, Luca | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jul 13, 2025 | Birken | ½–½ | Ellerbrock | Round 7: Birken, Michael - Ellerbrock, Manfred | Petrov's Defense: Classical Attack, Mason Variation | |
| Jul 12, 2025 | Maechler | ½–½ | Birken | Round 6: Maechler, Frank - Birken, Michael | Indian Defense: Wade-Tartakower Defense | |
| Jul 11, 2025 | Birken | ½–½ | Just | Round 5: Birken, Michael - Just, Joachim | Modern Defense: Three Pawns Attack | |
| Jul 10, 2025 | Winkler | ½–½ | Birken | Round 4: Winkler, Karl - Birken, Michael | Sicilian Defense: Dragon Variation, Accelerated Dragon | |
| Jul 9, 2025 | Birken | ½–½ | Reimann | Round 3: Birken, Michael - Reimann, Reinhold | French Defense: Exchange Variation | |
| Jul 8, 2025 | Stummeyer | ½–½ | Birken | Round 2: Stummeyer, Dieter - Birken, Michael | Sicilian Defense: Dragon Variation, Classical Variation | |