| Dec 29, 2025 | Van Osch | 1–0 | Muller | Round 5: Van Osch, Mees - Muller, Kenneth | Sicilian Defense: Dragon Variation | |
| Dec 28, 2025 | Sosef | 0–1 | Van Osch | Round 4: Sosef, Noah - Van Osch, Mees | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Dec 13, 2025 | Van Osch | ½–½ | Zouaghi | Round 5: Van Osch, Mees - Zouaghi, Amir | Sicilian Defense: Hyperaccelerated Dragon | |
| Dec 3, 2025 | Van Osch | ½–½ | Botter | Round 1: Van Osch, Mees - Botter, Simon | Four Knights Game: Spanish Variation, Nimzowitsch Variation | |
| Jul 19, 2025 | Fernandez | 1–0 | Van Osch | Round 2: Fernandez, Daniel Howard - Van Osch, Mees | King's Indian Attack: Sicilian Variation | |
| Jul 19, 2025 | Van Osch | ½–½ | Ruzhansky | Round 1: Van Osch, Mees - Ruzhansky, Elias | Sicilian Defense: Classical Variation, Sozin Attack | |
| Jul 18, 2025 | Van Osch | ½–½ | Gormally | Round 8: Van Osch, Mees - Gormally, Daniel W | Sicilian Defense: Richter-Rauzer Variation | |
| Jul 18, 2025 | Van Osch | 1–0 | Grutter | Round 5: Van Osch, Mees - Grutter, Tim | Four Knights Game: Spanish Variation | |
| Jul 18, 2025 | Dauw | 1–0 | Van Osch | Round 6: Dauw, Sterre - Van Osch, Mees | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jul 18, 2025 | Dgebuadze | 1–0 | Van Osch | Round 4: Dgebuadze, Alexandre - Van Osch, Mees | Sicilian Defense: Four Knights Variation | |
| Jul 18, 2025 | Van Osch | 1–0 | Victor | Round 3: Van Osch, Mees - Victor, Julian | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 18, 2025 | Van Volsem | 1–0 | Van Osch | Round 9: Van Volsem, Merlijn - Van Osch, Mees | Nimzo-Indian Defense: Classical Variation, Romanishin Gambit | |
| Jul 7, 2025 | Van Osch | ½–½ | Pijpers | Round 7: Van Osch, Mees - Pijpers, Arthur | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Mar 22, 2025 | Van Osch | 0–1 | Wagner | schachbundesliga20242025 | Sicilian Defense: Najdorf Variation, English Attack | |
| Oct 25, 2024 | Van Osch | 0–1 | Saraci | 39th European Chess Club Cup | Sicilian Defense: Löwenthal Variation | |
| Oct 24, 2024 | Van Osch | ½–½ | Jepson | 39th European Chess Club Cup | Philidor Defense: Lion Variation | |
| Oct 23, 2024 | Kanyamarala | ½–½ | Van Osch | 39th European Chess Club Cup | Queen's Indian Defense: Kasparov-Petrosian Variation, Petrosian Attack | |
| Oct 22, 2024 | Van Osch | 0–1 | Ten Hertog | 39th European Chess Club Cup | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Oct 21, 2024 | Van Osch | 1–0 | Stevcic | 39th European Chess Club Cup | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Oct 20, 2024 | Kadric | 1–0 | Van Osch | 39th European Chess Club Cup | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Jun 21, 2024 | Van Osch | 0–1 | Van Rootselaar | Round 2: Van Osch, Mees - Van Rootselaar, Rik | Sicilian Defense: Richter-Rauzer Variation | |
| Jun 21, 2024 | Dengiz | 0–1 | Van Osch | Round 1: Dengiz, Furkan - Van Osch, Mees | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Apr 28, 2024 | Van Osch | ½–½ | Lai | SchachBuli Runde 15 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Apr 27, 2024 | Movsesian | 1–0 | Van Osch | SchachBuli Runde 14 | Sicilian Defense: Four Knights Variation | |
| Nov 3, 2024 | Van Osch | ½–½ | Kopylov | Round 7: Van Osch, Mees - Kopylov, Daniel | Petrov's Defense: Modern Attack, Center Variation | |
| Nov 2, 2024 | Van Osch | 1–0 | Boehme | Round 5: Van Osch, Mees - Boehme, Arne | Pirc Defense: 150 Attack, Sveshnikov-Jansa Attack | |
| Nov 2, 2024 | Schulze | 0–1 | Van Osch | Round 6: Schulze, Lara - Van Osch, Mees | Sicilian Defense: Moscow Variation | |
| Nov 1, 2024 | Van Osch | 1–0 | Ritscher | Round 3: Van Osch, Mees - Ritscher, Jan-Paul, Dr. | Alekhine Defense: Exchange Variation | |
| Nov 1, 2024 | Hoeffer | 1–0 | Van Osch | Round 4: Hoeffer, David - Van Osch, Mees | Rapport-Jobava System | |
| Oct 31, 2024 | Van Osch | 1–0 | Jonnek | Round 1: Van Osch, Mees - Jonnek, Thomas | Caro-Kann Defense: Two Knights Attack | |
| Oct 31, 2024 | Skembris | 0–1 | Van Osch | Round 2: Skembris, Simon Max - Van Osch, Mees | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| May 28, 2023 | Van Osch | * | Ruzhansky | Limburg Open | ? | |
| May 28, 2023 | Gruenter | * | Van Osch | Limburg Open | ? | |
| Mar 6, 2022 | Meier | 1–0 | Van Osch | Bundesliga | King's Indian Defense | |
| Mar 5, 2022 | Van Osch | 0–1 | Heimann | Bundesliga | Four Knights Game | |
| Jan 14, 2022 | Pham | ½–½ | Van Osch | Open Praha 2022 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jan 13, 2022 | Van Osch | ½–½ | Carlsson | Open Praha 2022 | Four Knights Game | |
| Jan 12, 2022 | Nielsen | 0–1 | Van Osch | Open Praha 2022 | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Jan 11, 2022 | Van Osch | 0–1 | Vojta | Open Praha 2022 | French Defense: Winawer Variation, Advance Variation | |
| Jan 10, 2022 | Melaa | 0–1 | Van Osch | Open Praha 2022 | King's Indian Defense: Orthodox Variation, Glek Defense | |
| Jan 9, 2022 | Van Osch | 0–1 | Haring | Open Praha 2022 | Sicilian Defense: Kalashnikov Variation | |
| Jan 8, 2022 | Van Osch | 1–0 | Koubova | Open Praha 2022 | Caro-Kann Defense: Tartakower Variation | |
| Jan 8, 2022 | Panjer | 0–1 | Van Osch | Open Praha 2022 | English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto | |
| Jan 7, 2022 | Shatil | 0–1 | Van Osch | Open Praha 2022 | King's Indian Defense: Normal Variation, Rare Defenses | |