| Apr 29, 2026 | Nadrshin | 1–0 | Koppenens | Round 8: Nadrshin, Oleg - Koppenens, Oscar | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Apr 29, 2026 | Suthan | ½–½ | Koppenens | Round 7: Suthan, Aadvik - Koppenens, Oscar | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Apr 29, 2026 | Koppenens | 0–1 | Botter | Round 6: Koppenens, Oscar - Botter, Simon | Sicilian Defense: Najdorf Variation, English Attack | |
| Apr 27, 2026 | Lenting | 1–0 | Koppenens | Round 5: Lenting, Roan - Koppenens, Oscar | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Apr 27, 2026 | Koppenens | ½–½ | Thijssen | Round 4: Koppenens, Oscar - Thijssen, Freek | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Apr 25, 2026 | Koppenens | 1–0 | Brorens | Round 2: Koppenens, Oscar - Brorens, Victor | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Apr 25, 2026 | Shaikh | 0–1 | Koppenens | Round 1: Shaikh, Rushaan - Koppenens, Oscar | Queen's Gambit Declined: Westphalian Variation | |
| Apr 12, 2026 | Teianu | ½–½ | Koppenens | Round 3: Teianu, Sabin - Koppenens, Oscar | Queen's Gambit Declined: Barmen Variation | |
| Dec 30, 2025 | Koppenens | ½–½ | Nauanova Zhaniya | Round 9: Koppenens, Oscar - Nauanova Zhaniya | French Defense: Wing Gambit | |
| Dec 27, 2025 | Koppenens | ½–½ | Van t Hoff | Round 7: Koppenens, Oscar - Van t Hoff, Tom | Sicilian Defense: Old Sicilian | |
| Dec 26, 2025 | Koppenens | 0–1 | Aarts | Round 5: Koppenens, Oscar - Aarts, Joaquin | Sicilian Defense: Najdorf Variation, English Attack | |
| Dec 23, 2025 | Blom | 1–0 | Koppenens | Round 3: Blom, Rens - Koppenens, Oscar | English Opening: Anglo-Dutch Defense | |
| May 18, 2025 | Ponomarev | 0–1 | Koppenens | Round 6: Ponomarev, Ivan - Koppenens, Oscar | Catalan Opening: Open Defense, Classical Line | |
| May 18, 2025 | Koppenens | ½–½ | Haitjema | Round 5: Koppenens, Oscar - Haitjema, Jarich | French Defense: Advance Variation, Paulsen Attack | |
| May 17, 2025 | Zhang | 0–1 | Koppenens | Round 4: Zhang, Xiheng - Koppenens, Oscar | Sicilian Defense: Classical Variation | |
| May 17, 2025 | Koppenens | 1–0 | Cornelissen | Round 3: Koppenens, Oscar - Cornelissen, Jort | Sicilian Defense: Najdorf Variation | |
| May 17, 2025 | Issaad | 1–0 | Koppenens | Round 2: Issaad, Pascal - Koppenens, Oscar | Bird Opening: Dutch Variation | |
| May 13, 2025 | Koppenens | 0–1 | Van Wely | Round 1: Koppenens, Oscar - Van Wely, Loek | Sicilian Defense: Taimanov Variation | |
| May 2, 2025 | Koppenens | 0–1 | Seth | Round 9: Koppenens, Oscar - Seth, Aakrit | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
| May 1, 2025 | Ozbek | 0–1 | Koppenens | Round 8: Ozbek, Ahmet Naim - Koppenens, Oscar | Catalan Opening: Open Defense, Classical Line | |
| Apr 30, 2025 | Koppenens | 1–0 | Yantur | Round 7: Koppenens, Oscar - Yantur, Arda | Caro-Kann Defense: Maróczy Variation | |
| Apr 30, 2025 | Roersma | 1–0 | Koppenens | Round 6: Roersma, Dylan - Koppenens, Oscar | Sicilian Defense: Four Knights Variation | |
| Apr 29, 2025 | Koppenens | ½–½ | Zhang | Round 5: Koppenens, Oscar - Zhang, Xiheng | Sicilian Defense: Four Knights Variation | |
| Apr 28, 2025 | Koppenens | 1–0 | Ngangbam | Round 3: Koppenens, Oscar - Ngangbam, Chingthang | Sicilian Defense: Boleslavsky Variation | |
| Apr 28, 2025 | Aravindhan | 1–0 | Koppenens | Round 4: Aravindhan, Achyuth - Koppenens, Oscar | Sicilian Defense: Modern Variations, Main Line | |
| Apr 27, 2025 | Gupta | 1–0 | Koppenens | Round 2: Gupta, Akul - Koppenens, Oscar | Sicilian Defense: Four Knights Variation | |
| Apr 26, 2025 | Koppenens | 1–0 | Kakrana | Round 1: Koppenens, Oscar - Kakrana, Reyansh | Caro-Kann Defense: Two Knights Attack | |
| Mar 23, 2025 | Koppenens | 1–0 | Kais | Round 5: Koppenens, Oscar - Kais, Kristofer | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | |
| Mar 22, 2025 | Alfano | ½–½ | Koppenens | Round 3: Alfano, Emilie - Koppenens, Oscar | Sicilian Defense: French Variation | |
| Mar 22, 2025 | Lebedev | 0–1 | Koppenens | Round 4: Lebedev, Lion - Koppenens, Oscar | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Mar 21, 2025 | Koppenens | ½–½ | Madzia | Round 1: Koppenens, Oscar - Madzia, Nathan | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Mar 21, 2025 | Koppenens | 0–1 | Polzin | Round 2: Koppenens, Oscar - Polzin, Gustav | Caro-Kann Defense: Two Knights Attack | |
| Jun 26, 2024 | Boyd 2012: Leenen | 1–0 | Koppenens | Round 5: Boyd 2012: Leenen - Koppenens, Oscar | Trompowsky Attack | |
| Jun 16, 2024 | Koppenens | 1–0 | John | Round 2: Koppenens, Oscar - John, Ryan | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Jun 16, 2024 | Yourui Eric 2012: Zhang | 0–1 | Koppenens | Round 3: Yourui Eric 2012: Zhang - Koppenens, Oscar | English Opening: King's English Variation, Two Knights Variation, Smyslov System | |
| Jun 16, 2024 | Grigorov | 0–1 | Koppenens | Round 1: Grigorov, Kristian - Koppenens, Oscar | Sicilian Defense: Modern Variations | |
| Jun 2, 2024 | Koppenens | * | Quintus | WLC Tournament 2024 A | ? | |
| Jun 2, 2024 | Van Happen | * | Koppenens | WLC Tournament 2024 A | ? | |
| Jun 1, 2024 | Koppenens | 0–1 | Thijssen | WLC Tournament 2024 A | ? | |
| Jun 1, 2024 | Feijen | ½–½ | Koppenens | WLC Tournament 2024 A | ? | |
| Jun 1, 2024 | Messaoudi | 1–0 | Koppenens | WLC Tournament 2024 A | ? | |
| May 31, 2024 | Koppenens | 0–1 | Korneev | WLC Tournament 2024 A | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| May 3, 2024 | Koppenens | ½–½ | Lalkota | Round 9: Koppenens, Oscar - Lalkota, Sai Pranav Tejas | French Defense: Schlechter Variation | |
| May 2, 2024 | Guillaumond | 1–0 | Koppenens | Round 8: Guillaumond, Matthieu - Koppenens, Oscar | Sicilian Defense: Alapin Variation, Barmen Defense, Central Exchange | |
| May 1, 2024 | Koppenens | 1–0 | De Wit | Round 7: Koppenens, Oscar - De Wit, Evan | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| May 1, 2024 | Frederiks | ½–½ | Koppenens | Round 6: Frederiks, Jesse - Koppenens, Oscar | Grünfeld Defense: Three Knights Variation, Burille Variation | |
| Apr 30, 2024 | Tetova | 1–0 | Koppenens | Round 5: Tetova, Amir - Koppenens, Oscar | London System | |
| Apr 29, 2024 | Koppenens | 0–1 | Ritzerveld | Round 4: Koppenens, Oscar - Ritzerveld, Noah | Italian Game: Scotch Gambit, Max Lange Attack | |
| Apr 29, 2024 | Koppenens | 1–0 | Klein Tuente | Round 3: Koppenens, Oscar - Klein Tuente, Sam | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Apr 28, 2024 | Groenewoud | 1–0 | Koppenens | Round 2: Groenewoud, Joel - Koppenens, Oscar | Sicilian Defense: Venice Attack | |
| Apr 27, 2024 | Koppenens | 1–0 | Alexandros Stylianou | Round 1: Koppenens, Oscar - Alexandros Stylianou | Sicilian Defense: Accelerated Dragon | |
| Apr 1, 2024 | Koppenens | 0–1 | Zhao | Round 5: Koppenens, Oscar - Zhao, George | French Defense: Schlechter Variation | |
| Mar 31, 2024 | To | ½–½ | Koppenens | Round 4: To, Nam Long - Koppenens, Oscar | London System | |
| Mar 30, 2024 | Igor Shevchenko | 0–1 | Koppenens | Round 3: Igor Shevchenko - Koppenens, Oscar | Grünfeld Defense: Russian Variation | |
| Mar 30, 2024 | Koppenens | 0–1 | El Karoui | Round 2: Koppenens, Oscar - El Karoui, Noe | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Mar 30, 2024 | Kais | 1–0 | Koppenens | Round 1: Kais, Kristofer - Koppenens, Oscar | London System | |
| Sep 14, 2024 | Koppenens | 1–0 | Achuthan | Round 1: Koppenens, Oscar - Achuthan, Dylan | Sicilian Defense: Kalashnikov Variation | |
| Sep 14, 2024 | Koppenens | 1–0 | Kudzia | Round 1: Koppenens, Oscar - Kudzia, Krzystof | Sicilian Defense: Portsmouth Gambit | |
| Sep 14, 2024 | Koppenens | 0–1 | Timmermans | Round 1: Koppenens, Oscar - Timmermans, Mark | Italian Game: Scotch Gambit, Max Lange Attack | |
| Sep 14, 2024 | Lujan Garcia | ½–½ | Koppenens | Round 1: Lujan Garcia, Rogelio - Koppenens, Oscar | Indian Defense: Gibbins-Weidenhagen Gambit | |
| Sep 14, 2024 | Van de Poel | 0–1 | Koppenens | Round 1: Van de Poel, Jona - Koppenens, Oscar | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| — | Koppenens | 1–0 | Hagen | Round 2: Koppenens, Oscar - Hagen, Carlijn | Italian Game: Rosentreter Gambit | |
| — | Koppenens | ½–½ | Thijssen | Round 4: Koppenens, Oscar - Thijssen, Freek | Italian Game: Classical Variation, Center Attack | |
| — | Koppenens | ½–½ | Elferink | Round 6: Koppenens, Oscar - Elferink, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Koppenens | 0–1 | Van Harten | Round 7: Koppenens, Oscar - Van Harten, Wout | Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | |
| — | Koppenens | ½–½ | Dijkhuijsen | Round 9: Koppenens, Oscar - Dijkhuijsen, Thomas | Sicilian Defense: Scheveningen Variation | |
| — | Frederiks | 0–1 | Koppenens | Round 3: Frederiks, Jesse - Koppenens, Oscar | Queen's Pawn Game: Colle System | |
| — | Leenen | 0–1 | Koppenens | Round 5: Leenen, Boyd - Koppenens, Oscar | Queen's Gambit Declined: Barmen Variation | |
| — | Seth | 0–1 | Koppenens | Round 8: Seth, Aakrit - Koppenens, Oscar | Indian Defense | |