| Jan 4, 2026 | Burkhardt | 0–1 | Renner | Runde 6: Burkhardt, Holger - Renner, Kai | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jan 4, 2026 | Renner | ½–½ | Bruns | Runde 5: Renner, Kai - Bruns, Kai-Christian | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jan 3, 2026 | Ziller | 0–1 | Renner | Runde 4: Ziller, Christian - Renner, Kai | French Defense: La Bourdonnais Variation | |
| Jan 3, 2026 | Renner | ½–½ | Schumann | Runde 3: Renner, Kai - Schumann, Steffen | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Jan 2, 2026 | Gottschalk | 0–1 | Renner | Runde 2: Gottschalk, Siegfried - Renner, Kai | Dutch Defense: Queen's Knight Variation | |
| Jan 2, 2026 | Renner | 1–0 | Monnerjahn | Runde 1: Renner, Kai - Monnerjahn, Lukas | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Dec 28, 2025 | Kuegel | ½–½ | Renner | Runde 7: Kuegel, Tobias - Renner, Kai | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Nov 1, 2025 | Mkrtchian | 1–0 | Renner | Round 1: Mkrtchian, Lilit - Renner, Kai | English Opening: Anglo-Dutch Defense | |
| Jan 5, 2025 | Renner | ½–½ | Moeller | Round 7: Renner, Kai - Moeller, Jonas | Ruy Lopez: Closed, Anti-Marshall | |
| Jan 4, 2025 | Renner | ½–½ | Gottschalk | Round 5: Renner, Kai - Gottschalk, Siegfried | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jan 4, 2025 | Stoy | ½–½ | Renner | Round 6: Stoy, Ulf - Renner, Kai | English Opening: Anglo-Dutch Defense | |
| Jan 3, 2025 | Renner | 1–0 | Seer | Round 3: Renner, Kai - Seer, Maurice | Ruy Lopez: Steinitz Defense | |
| Jan 3, 2025 | Lebiedz | ½–½ | Renner | Round 4: Lebiedz, Oliver - Renner, Kai | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jan 2, 2025 | Renner | 1–0 | Bangert | Round 1: Renner, Kai - Bangert, Jonas | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Jan 2, 2025 | Zweigait | 1–0 | Renner | Round 2: Zweigait, Leon - Renner, Kai | Dutch Defense: Queen's Knight Variation | |
| Oct 23, 2024 | Renner | 0–1 | Kollars | Round 1: Renner, Kai - Kollars, Dmitrij | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Jun 9, 2024 | Shalovylo | 0–1 | Renner | Round 5: Shalovylo, Yuriy - Renner, Kai | Dutch Defense: Queen's Knight Variation | |
| Jun 8, 2024 | Steffens | 1–0 | Renner | Round 3: Steffens, Olaf - Renner, Kai | Polish Opening: Bugayev Attack | |
| Jan 7, 2023 | Renner | 1–0 | Schumann | Lower Saxony Championship | A | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Jan 7, 2023 | Aden | ½–½ | Renner | Lower Saxony Championship | A | Dutch Defense: Staunton Gambit | |
| Jan 5, 2023 | Rossberg | ½–½ | Renner | Lower Saxony Championship | A | Sicilian Defense: Kan Variation, Knight Variation | |
| Nov 13, 2022 | Galioglu | * | Renner | 25th Open Bavarian Championship | ? | |
| Nov 12, 2022 | Renner | 0–1 | Morawietz | 25th Open Bavarian Championship | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Nov 11, 2022 | Edelmann | 0–1 | Renner | 25th Open Bavarian Championship | ? | |
| Nov 10, 2022 | Renner | 1–0 | Jaivardhan Raj | 25th Open Bavarian Championship | ? | |
| Nov 9, 2022 | Renner | 1–0 | Lochte | 25th Open Bavarian Championship | ? | |
| Nov 8, 2022 | Gopal G.N. | 1–0 | Renner | 25th Open Bavarian Championship | French Defense: Tarrasch Variation, Closed Variation | |
| Nov 7, 2022 | Saizew | 0–1 | Renner | 25th Open Bavarian Championship | ? | |
| Nov 6, 2022 | Renner | 0–1 | Baum | 25th Open Bavarian Championship | Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line | |
| — | Renner | 1–0 | Miowitz | Round 2: Renner, Kai - Miowitz, Torsten | Caro-Kann Defense: Advance Variation, Tal Variation | |
| — | Renner | ½–½ | Herter | Round 4: Renner, Kai - Herter, Arne | Sicilian Defense: Najdorf Variation, Adams Attack | |
| — | Renner | ½–½ | Torosyan | Round 6: Renner, Kai - Torosyan, Bagrat | Ruy Lopez: Open, Main Line | |
| — | Ulrich | ½–½ | Renner | Round 1: Ulrich, Andreas - Renner, Kai | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| — | Alsleben | 0–1 | Renner | Round 3: Alsleben, Moritz - Renner, Kai | Dutch Defense: Fianchetto Attack | |
| — | Drygala | 0–1 | Renner | Round 5: Drygala, Lars - Renner, Kai | Dutch Defense | |
| — | Muendoerfer | ½–½ | Renner | Round 7: Muendoerfer, Sebastian - Renner, Kai | Dutch Defense | |