| Jan 5, 2026 | Westerhoff | 0–1 | Seeber | Runde 7: Westerhoff, Ralf - Seeber, Helmut | Semi-Slav Defense | |
| Jan 4, 2026 | Musev | 1–0 | Westerhoff | Runde 6: Musev, Sibin - Westerhoff, Ralf | Rapport-Jobava System | |
| Jan 4, 2026 | Westerhoff | 0–1 | Jaekel | Runde 5: Westerhoff, Ralf - Jaekel, Michael | Rat Defense: Antal Defense | |
| Jan 3, 2026 | Gniffke | 1–0 | Westerhoff | Runde 4: Gniffke, Reiner - Westerhoff, Ralf | English Opening: King's English Variation, Two Knights Variation, Keres Variation | |
| Jan 3, 2026 | Westerhoff | 1–0 | Schlaetker | Runde 3: Westerhoff, Ralf - Schlaetker, Christine | Ruy Lopez: Morphy Defense, Caro Variation | |
| Jan 2, 2026 | Cherng | * | Westerhoff | Runde 2: Cherng, Ying Horng - Westerhoff, Ralf | ? | |
| Jan 2, 2026 | Westerhoff | 0–1 | Spieker | Runde 1: Westerhoff, Ralf - Spieker, Hans-Joachim | Sicilian Defense: Old Sicilian | |
| Dec 19, 2025 | Westerhoff | 0–1 | Schmitt | Stadtpokal Vechta 2025 | Sicilian Defense: French Variation | |
| Nov 14, 2025 | Westerhoff | * | Bohmann | Stadtpokal Vechta 2025 | Owen Defense | |
| Nov 1, 2025 | Prigandt | 0–1 | Westerhoff | Runde 7: Prigandt, Junis - Westerhoff, Ralf | English Opening: King's English Variation | |
| Nov 1, 2025 | Westerhoff | 1–0 | Neumann | Runde 6: Westerhoff, Ralf - Neumann, Mattis | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Nov 1, 2025 | Iseke | 1–0 | Westerhoff | Runde 5: Iseke, Reinhard - Westerhoff, Ralf | Slav Defense | |
| Oct 31, 2025 | Westerhoff | 1–0 | Burdielov | Runde 4: Westerhoff, Ralf - Burdielov, Illia | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Oct 31, 2025 | Noennig | 0–1 | Westerhoff | Runde 3: Noennig, Nina - Westerhoff, Ralf | Sicilian Defense: Four Knights Variation | |
| Oct 30, 2025 | Westerhoff | 0–1 | Suberski | Runde 2: Westerhoff, Ralf - Suberski, Lukas | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Oct 30, 2025 | Scherdin | 1–0 | Westerhoff | Runde 1: Scherdin, Jamie - Westerhoff, Ralf | Scotch Game: Benima Defense | |
| Oct 24, 2025 | Westerhoff | 1–0 | Heermann | Stadtpokal Vechta 2025 | Queen's Indian Defense: Fianchetto Variation, Sämisch Variation | |
| Jun 1, 2025 | Westerhoff | 0–1 | Kandora | Round 7: Westerhoff, Ralf - Kandora, William | Petrov's Defense: Italian Variation | |
| May 31, 2025 | Christiansen | ½–½ | Westerhoff | Round 6: Christiansen, Jana-Marie - Westerhoff, Ralf | English Opening: King's English Variation | |
| May 31, 2025 | Westerhoff | 0–1 | Fabig | Round 5: Westerhoff, Ralf - Fabig, Holger | Horwitz Defense | |
| May 30, 2025 | Farokhi | 1–0 | Westerhoff | Round 4: Farokhi, Darian - Westerhoff, Ralf | Sicilian Defense: Old Sicilian | |
| May 30, 2025 | Westerhoff | 1–0 | Kern | Round 3: Westerhoff, Ralf - Kern, Burkhard | Semi-Slav Defense: Noteboom Variation | |
| May 29, 2025 | Eschenauer | 0–1 | Westerhoff | Round 2: Eschenauer, Frank - Westerhoff, Ralf | Sicilian Defense: Smith-Morra Gambit Accepted | |
| May 29, 2025 | Westerhoff | 0–1 | Holinka | Round 1: Westerhoff, Ralf - Holinka, Henning | Queen's Pawn Game: Zukertort Variation | |
| Oct 19, 2024 | Westerhoff | 0–1 | Hueser | Round 7: Westerhoff, Ralf - Hueser, Michel | Caro-Kann Defense: Exchange Variation | |
| Oct 17, 2024 | Westerhoff | 1–0 | Bilylovets | Round 5: Westerhoff, Ralf - Bilylovets, Kiril | Sicilian Defense: French Variation | |
| Oct 16, 2024 | Westerhoff | 1–0 | Demiroers | Round 4: Westerhoff, Ralf - Demiroers, Emre | Sicilian Defense: French Variation | |
| Oct 15, 2024 | Ali | 0–1 | Westerhoff | Round 3: Ali, Karim - Westerhoff, Ralf | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Oct 14, 2024 | Westerhoff | 1–0 | Tillkorn | Round 2: Westerhoff, Ralf - Tillkorn, Daniel | Sicilian Defense: Modern Variations | |
| Oct 11, 2024 | Doehn | 1–0 | Westerhoff | Round 6: Doehn, Friedemann - Westerhoff, Ralf | Queen's Pawn Game: London System, with e6 | |
| Jun 9, 2024 | Westerhoff | ½–½ | Schaper | Round 5: Westerhoff, Ralf - Schaper, Kai | King's Indian Defense: Zinnowitz Variation | |
| Jun 9, 2024 | Hachtmann | 1–0 | Westerhoff | Round 4: Hachtmann, Christian - Westerhoff, Ralf | Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense | |
| Dec 27, 2024 | Westerhoff | 0–1 | Weigand | Round 1: Westerhoff, Ralf - Weigand, Anton | Sicilian Defense: Lasker-Pelikan Variation, Exchange Variation | |
| Nov 17, 2024 | Westerhoff | 0–1 | Rokh | Round 5: Westerhoff, Ralf - Rokh, Ahoora | Caro-Kann Defense: Exchange Variation | |
| Nov 17, 2024 | Drozd | 0–1 | Westerhoff | Round 4: Drozd, Maciej - Westerhoff, Ralf | Sicilian Defense: Grand Prix Attack | |
| Nov 16, 2024 | Westerhoff | 1–0 | Matis | Round 3: Westerhoff, Ralf - Matis, Paul | Queen's Pawn Game: Torre Attack | |
| Nov 16, 2024 | Ryba | 0–1 | Westerhoff | Round 2: Ryba, Leon - Westerhoff, Ralf | Slav Defense: Breyer Variation | |
| Nov 15, 2024 | Westerhoff | 0–1 | Schramm | Round 1: Westerhoff, Ralf - Schramm, Kilian | Sicilian Defense: Modern Variations | |
| Nov 3, 2024 | Westerhoff | 0–1 | Grooss | Round 7: Westerhoff, Ralf - Grooss, Jochen | French Defense: Advance Variation, Paulsen Attack | |
| Nov 2, 2024 | Westerhoff | ½–½ | Wachtel | Round 5: Westerhoff, Ralf - Wachtel, Edwin | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Nov 2, 2024 | Tanukusuma | ½–½ | Westerhoff | Round 6: Tanukusuma, Kyllian Gotthold - Westerhoff, Ralf | Sicilian Defense: Old Sicilian | |
| Nov 1, 2024 | Nafati | 0–1 | Westerhoff | Round 3: Nafati, Meryem - Westerhoff, Ralf | French Defense: Advance Variation, Euwe Variation | |
| Oct 31, 2024 | Westerhoff | 0–1 | Uhlenbrock | Round 2: Westerhoff, Ralf - Uhlenbrock, Sven | Pirc Defense | |
| Oct 31, 2024 | Pawlus | 0–1 | Westerhoff | Round 1: Pawlus, Daniel - Westerhoff, Ralf | Slav Defense: Three Knights Variation | |
| Jan 5, 2023 | Westerhoff | 0–1 | Lau | Lower Saxony Championship | B | Sicilian Defense: Old Sicilian | |
| — | Westerhoff | 0–1 | Janulis | Round 1: Westerhoff, Ralf - Janulis, Vykintas | Nimzowitsch Defense: Williams Variation | |
| — | Westerhoff | 1–0 | Held | Round 4: Westerhoff, Ralf - Held, Enna | East Indian Defense | |
| — | Westerhoff | 0–1 | Abo Azrek | Round 6: Westerhoff, Ralf - Abo Azrek, Ahmad | Ruy Lopez: Steinitz Defense | |
| — | Muhs | 1–0 | Westerhoff | Round 2: Muhs, Patrick - Westerhoff, Ralf | Queen's Pawn Game: Accelerated London System | |
| — | Curth | 0–1 | Westerhoff | Round 3: Curth, Collin - Westerhoff, Ralf | Sicilian Defense: Closed, Traditional | |
| — | Diehl | 0–1 | Westerhoff | Round 5: Diehl, Linus - Westerhoff, Ralf | Rapport-Jobava System | |
| — | Schulze | ½–½ | Westerhoff | Round 7: Schulze, Jonas - Westerhoff, Ralf | Sicilian Defense: Four Knights Variation | |