| Oct 25, 2025 | Polzin | 1–0 | Meessen | Round 7: Polzin, Rainer - Meessen, Rudolf | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Oct 24, 2025 | Polzin | 0–1 | Bronstein | Round 6: Polzin, Rainer - Bronstein, Or | Sicilian Defense: Closed | |
| Oct 23, 2025 | Frendzas | 0–1 | Polzin | Round 5: Frendzas, Panayotis - Polzin, Rainer | Caro-Kann Defense: Tartakower Variation | |
| Oct 22, 2025 | Eberle | ½–½ | Polzin | Round 4: Eberle, Triona - Polzin, Rainer | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Oct 21, 2025 | Polzin | ½–½ | Ivic | Round 3: Polzin, Rainer - Ivic, Velimir | Sicilian Defense: Closed, Traditional | |
| Oct 20, 2025 | Polzin | 1–0 | Pirklova | Round 2: Polzin, Rainer - Pirklova, Hana | Ruy Lopez: Closed, Worrall Attack, Castling Line | |
| Oct 19, 2025 | Fejzullahu | 0–1 | Polzin | Round 1: Fejzullahu, Afrim - Polzin, Rainer | French Defense: Advance Variation, Euwe Variation | |
| Apr 27, 2025 | Polzin | 0–1 | Yatskar | Round 9: Polzin, Rainer - Yatskar, Martin | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Apr 26, 2025 | Vavulin | 1–0 | Polzin | Round 8: Vavulin, Maxim - Polzin, Rainer | Caro-Kann Defense: Tartakower Variation | |
| Apr 25, 2025 | Polzin | 1–0 | Jahnz | Round 7: Polzin, Rainer - Jahnz, Laurin | Caro-Kann Defense: Advance Variation | |
| Apr 24, 2025 | Czernek | 1–0 | Polzin | Round 6: Czernek, Tymon - Polzin, Rainer | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Apr 23, 2025 | Polzin | ½–½ | Buyukasik | Round 5: Polzin, Rainer - Buyukasik, Diyap | Sicilian Defense: Closed, Traditional | |
| Apr 22, 2025 | Ahmadinia | 0–1 | Polzin | Round 4: Ahmadinia, Ebrahim - Polzin, Rainer | Caro-Kann Defense: Advance Variation | |
| Apr 21, 2025 | Polzin | 1–0 | Noeldner | Round 3: Polzin, Rainer - Noeldner, Julian | Sicilian Defense: Closed, Traditional | |
| Apr 20, 2025 | Ermitsch | ½–½ | Polzin | Round 2: Ermitsch, Magnus - Polzin, Rainer | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Apr 19, 2025 | Polzin | ½–½ | Matthes | Round 1: Polzin, Rainer - Matthes, Aaron | Sicilian Defense: Closed, Traditional | |
| Apr 7, 2024 | Polzin | ½–½ | Baldauf | Round 9: Polzin, Rainer - Baldauf, Marco | Caro-Kann Defense: Advance Variation | |
| Apr 6, 2024 | Foerster | ½–½ | Polzin | Round 8: Foerster, Jonas - Polzin, Rainer | Sicilian Defense: French Variation | |
| Apr 5, 2024 | Polzin | 1–0 | Schmidek | Round 7: Polzin, Rainer - Schmidek, Emil | Caro-Kann Defense: Advance Variation | |
| Apr 3, 2024 | Jahnz | ½–½ | Polzin | Round 6: Jahnz, Laurin - Polzin, Rainer | Modern Defense: Two Knights Variation | |
| Apr 3, 2024 | Poltorak | ½–½ | Polzin | Round 5: Poltorak, Sebastian - Polzin, Rainer | Ruy Lopez: Closed, Chigorin Defense, Panov System | |
| Apr 1, 2024 | Polzin | 1–0 | Hesse | Round 4: Polzin, Rainer - Hesse, Henrik | Sicilian Defense: Kan Variation, Wing Attack | |
| Apr 1, 2024 | Polzin | 0–1 | Lagunow | Round 3: Polzin, Rainer - Lagunow, Raphael | Sicilian Defense: Closed, Traditional | |
| Mar 31, 2024 | Dubessay | 0–1 | Polzin | Round 2: Dubessay, Bastien - Polzin, Rainer | King's Indian Defense: Makogonov Variation | |
| Mar 30, 2024 | Polzin | 1–0 | Brustkern | Round 1: Polzin, Rainer - Brustkern, Juergen | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Nov 21, 2024 | Polzin | ½–½ | Abel | Round 9: Polzin, Rainer - Abel, Dennes | Ruy Lopez: Closed | |
| Nov 20, 2024 | Polzin | 0–1 | Sumets | Round 7: Polzin, Rainer - Sumets, Andrey | Sicilian Defense: Kan Variation, Wing Attack, Spraggett Attack | |
| Nov 20, 2024 | Nechitaylo | ½–½ | Polzin | Round 8: Nechitaylo, Nikita - Polzin, Rainer | King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | |
| Nov 19, 2024 | Papp | 1–0 | Polzin | Round 6: Papp, Sarah - Polzin, Rainer | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Nov 18, 2024 | Polzin | 1–0 | Besou | Round 5: Polzin, Rainer - Besou, Hussain | Sicilian Defense: Closed | |
| Nov 18, 2024 | Efimenko | 1–0 | Polzin | Round 4: Efimenko, Zahar - Polzin, Rainer | King's Indian Defense: Makogonov Variation | |
| Nov 17, 2024 | Polzin | ½–½ | Polster | Round 3: Polzin, Rainer - Polster, Christian | Sicilian Defense: Closed | |
| Nov 17, 2024 | Pubantz | ½–½ | Polzin | Round 2: Pubantz, Jan - Polzin, Rainer | King's Indian Defense: Exchange Variation | |
| Nov 16, 2024 | Polzin | ½–½ | Giorgadze | Round 1: Polzin, Rainer - Giorgadze, Giorgi | French Defense: Rubinstein Variation, Blackburne Defense | |
| Oct 3, 2022 | Volokitin | 1–0 | Polzin | 37th European Club Cup | Caro-Kann Defense: Advance Variation, Short Variation | |
| Sep 20, 2020 | Polzin | 0–1 | Zumsande | Schachbundesliga Championship | French Defense: Classical Variation, Steinitz Variation | |
| Sep 19, 2020 | Polzin | 0–1 | Nikolic | Schachbundesliga Championship | French Defense: Winawer Variation, Portisch-Hook Variation | |
| Sep 18, 2020 | Polzin | 0–1 | Lokander | Schachbundesliga Championship | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 | |
| Sep 17, 2020 | Polzin | 0–1 | Zaragatski | Schachbundesliga Championship | Scandinavian Defense: Classical Variation | |