| — | Elgersma | 0–1 | Terekhov | new tournament description | Sicilian Defense: French Variation | |
| — | Sharma Isha | 0–1 | Elgersma | Grenke Open | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Apr 11, 2026 | Braun | ½–½ | Elgersma | Round 9: Braun, Christian - Elgersma, Onno | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Mar 7, 2026 | Elgersma | ½–½ | Korneev | Round 8: Elgersma, Onno - Korneev, Oleg | King's Indian Attack: Keres Variation | |
| Feb 7, 2026 | Victor | 0–1 | Elgersma | Round 7: Victor, Julian - Elgersma, Onno | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 31, 2026 | Elgersma | 0–1 | Gloeckler | Tata Steel Chess Qualifiers | Catalan Opening: Closed | |
| Jan 30, 2026 | Beukema | 0–1 | Elgersma | Tata Steel Chess Qualifiers | Bird Opening: Dutch Variation | |
| Jan 27, 2026 | Elgersma | 1–0 | Van Foreest | Tata Steel Chess Qualifiers | King's Indian Defense: Semi-Classical Variation | |
| Jan 27, 2026 | Tudor | 1–0 | Elgersma | Tata Steel Chess Qualifiers | Queen's Gambit Declined: Three Knights Variation | |
| Jan 26, 2026 | Elgersma | 0–1 | Hrbek | Tata Steel Chess Qualifiers | Queen's Gambit Declined: Three Knights Variation | |
| Jan 25, 2026 | Baselmans | ½–½ | Elgersma | Tata Steel Chess Qualifiers | Ruy Lopez: Marshall Attack | |
| Jan 24, 2026 | Elgersma | 1–0 | Lohia | Tata Steel Chess Qualifiers | Catalan Opening: Closed | |
| Jan 15, 2026 | Carow | 1–0 | Elgersma | Tata Steel Chess Qualifiers | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 15, 2026 | Grutter | * | Elgersma | Tata Steel Chess Qualifiers | ? | |
| Dec 29, 2025 | Krishnan | 1–0 | Elgersma | Round 9: Krishnan, Ritvik - Elgersma, Onno | Queen's Gambit Declined: Barmen Variation | |
| Dec 28, 2025 | Elgersma | 1–0 | De Jong | Round 8: Elgersma, Onno - De Jong, Migchiel | Sicilian Defense: Kan Variation | |
| Dec 28, 2025 | Duijker | 1–0 | Elgersma | Round 7: Duijker, Rick - Elgersma, Onno | French Defense: Classical Variation, Burn Variation | |
| Dec 26, 2025 | Elgersma | 1–0 | Schuricht | Round 6: Elgersma, Onno - Schuricht, Emil Frederick | English Opening: Agincourt Defense | |
| Dec 26, 2025 | Elgersma | 1–0 | Van der Hagen | Round 5: Elgersma, Onno - Van der Hagen, Loek | Indian Defense: London System | |
| Dec 24, 2025 | Van Roon | 1–0 | Elgersma | Round 5: Van Roon, Sjoerd - Elgersma, Onno | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Dec 24, 2025 | Elgersma | 1–0 | Wempe | Round 4: Elgersma, Onno - Wempe, Joost | King's Indian Attack | |
| Dec 23, 2025 | Kazakouski | 1–0 | Elgersma | Round 3: Kazakouski, Valery - Elgersma, Onno | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Dec 22, 2025 | Advaitt Srikant Koduri | 0–1 | Elgersma | Round 2: Advaitt Srikant Koduri - Elgersma, Onno | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 21, 2025 | Elgersma | ½–½ | Bakija | Round 1: Elgersma, Onno - Bakija, Alan | King's Indian Attack: Sicilian Variation | |
| Nov 22, 2025 | Brookes | 1–0 | Elgersma | Round 4: Brookes, Christopher - Elgersma, Onno | Ruy Lopez: Closed | |
| Nov 7, 2025 | Elgersma | 0–1 | Ten Hertog | KNSB competitie 2025/2026 | Caro-Kann Defense: Two Knights Attack | |
| Oct 4, 2025 | Elgersma | 1–0 | Rijnaarts | Round 2: Elgersma, Onno - Rijnaarts, Sjef | King's Indian Attack: Yugoslav Variation | |
| Sep 20, 2025 | Sirin | 1–0 | Elgersma | Round 1: Sirin, Atakan - Elgersma, Onno | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Jul 30, 2025 | Maatman | 0–1 | Elgersma | Round 9: Maatman, Nick - Elgersma, Onno | Queen's Indian Defense: Fianchetto Variation, Kramnik Variation | |
| Jul 29, 2025 | Elgersma | 0–1 | De Boer | Round 8: Elgersma, Onno - De Boer, Eelke | King's Indian Attack: Double Fianchetto | |
| Jul 28, 2025 | Flom | 0–1 | Elgersma | Round 7: Flom, Gabriel - Elgersma, Onno | Ruy Lopez: Closed, Delayed Exchange | |
| Jul 27, 2025 | Elgersma | 1–0 | Baselmans | Round 6: Elgersma, Onno - Baselmans, Luuk | Nimzo-Indian Defense: Classical Variation, Keres Defense | |
| Jul 26, 2025 | Madularea | ½–½ | Elgersma | Round 5: Madularea, David - Elgersma, Onno | Four Knights Game | |
| Jul 25, 2025 | Elgersma | 1–0 | Duijker | Round 4: Elgersma, Onno - Duijker, Rick | Petrov's Defense: Damiano Variation, Kholmov Gambit | |
| Jul 24, 2025 | Albers | ½–½ | Elgersma | Round 3: Albers, Sasa - Elgersma, Onno | Ruy Lopez: Marshall Attack | |
| Jul 23, 2025 | Elgersma | 1–0 | Eckardt | Round 2: Elgersma, Onno - Eckardt, Joshua | French Defense: Classical Variation, Shirov-Anand Variation | |
| Jul 22, 2025 | Ten Dam | ½–½ | Elgersma | Round 1: Ten Dam, Bram - Elgersma, Onno | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jun 9, 2025 | Elgersma | 1–0 | Van Batenburg | Round 7: Elgersma, Onno - Van Batenburg, Mees | King's Indian Attack | |
| Jun 8, 2025 | Donker | 1–0 | Elgersma | Round 4: Donker, Roel - Elgersma, Onno | Queen's Gambit Declined: Three Knights Variation | |
| Jun 7, 2025 | Elgersma | 0–1 | Bok | Round 3: Elgersma, Onno - Bok, Benjamin | Nimzo-Larsen Attack: Classical Variation | |
| Jun 7, 2025 | Groenewoud | 0–1 | Elgersma | Round 2: Groenewoud, Joel - Elgersma, Onno | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 6, 2025 | Elgersma | 1–0 | Terlouw | Round 1: Elgersma, Onno - Terlouw, Wouter | King's Indian Attack: Spassky Variation | |
| Jun 1, 2025 | Kokje | 1–0 | Elgersma | Round 6: Kokje, Joris - Elgersma, Onno | Indian Defense: Anti-Nimzo-Indian | |
| Jun 1, 2025 | Elgersma | 1–0 | Grooten | Round 5: Elgersma, Onno - Grooten, Herman | Sicilian Defense: Kan Variation | |
| May 31, 2025 | Ercan | 0–1 | Elgersma | Round 4: Ercan, Selman - Elgersma, Onno | Queen's Gambit Declined | |
| May 31, 2025 | Winter | ½–½ | Elgersma | Round 3: Winter, Sven - Elgersma, Onno | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| May 29, 2025 | Nikolov | 0–1 | Elgersma | sofia25 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 28, 2025 | Elgersma | 1–0 | Gkavardinas | sofia25 | Sicilian Defense: Moscow Variation | |
| May 27, 2025 | Velikov | 0–1 | Elgersma | sofia25 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 26, 2025 | Elgersma | 0–1 | Krishnan | sofia25 | King's Indian Attack: Sicilian Variation | |
| May 26, 2025 | Ribstein | ½–½ | Elgersma | sofia25 | Queen's Gambit Declined | |
| May 25, 2025 | Elgersma | 1–0 | Nikolov | sofia25 | Queen's Pawn Game: Chigorin Variation | |
| May 24, 2025 | Aydemir | 0–1 | Elgersma | sofia25 | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| May 23, 2025 | Elgersma | ½–½ | Kishore Kumar Jaganathan | sofia25 | East Indian Defense | |
| May 23, 2025 | Boeren | ½–½ | Elgersma | sofia25 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 13, 2025 | Lammens | ½–½ | Elgersma | Round 9: Lammens, Tim - Elgersma, Onno | Tarrasch Defense: Dubov Tarrasch | |
| Apr 5, 2025 | Elgersma | 0–1 | Los | KNSB Meesterklasse 2024-2025 | East Indian Defense | |
| Mar 8, 2025 | Klaska | 1–0 | Elgersma | Round 7: Klaska, Philipp Leon - Elgersma, Onno | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Feb 8, 2025 | Elgersma | 0–1 | Ernst | Round 6: Elgersma, Onno - Ernst, Sipke | Ruy Lopez: Closed, Martinez Variation | |
| Nov 9, 2024 | Elgersma | 0–1 | Baselmans | KNSB Meesterklasse 2024-2025 | King's Indian Attack: Sicilian Variation | |
| Nov 2, 2024 | Elgersma | 0–1 | Bruns | Amsterdam Chess Open 2024 | Sicilian Defense: Four Knights Variation | |
| Nov 1, 2024 | Jonsson | ½–½ | Elgersma | Amsterdam Chess Open 2024 | French Defense: Schlechter Variation | |
| Sep 21, 2024 | Ondersteijn | 1–0 | Elgersma | Round 1: Ondersteijn, Niels - Elgersma, Onno | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Jul 18, 2024 | Elgersma | ½–½ | Wunnink | Amsterdam Science Park 2024 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Jul 17, 2024 | Elgersma | ½–½ | Duson | Amsterdam Science Park 2024 | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Jul 16, 2024 | Kanis | ½–½ | Elgersma | Amsterdam Science Park 2024 | Indian Defense: London System | |
| Jul 15, 2024 | Dimitrijeski | ½–½ | Elgersma | Amsterdam Science Park 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 14, 2024 | Elgersma | 1–0 | Groenewoud | Amsterdam Science Park 2024 | Caro-Kann Defense: Tartakower Variation | |
| Jul 11, 2024 | Elgersma | * | Pranav K P | Round 9: Elgersma, Onno - Pranav K P | ? | |
| Jul 10, 2024 | Srdanovic | * | Elgersma | Round 8: Srdanovic, Jovana - Elgersma, Onno | ? | |
| Jul 9, 2024 | Elgersma | * | Unsal | Round 7: Elgersma, Onno - Unsal, Gorkem | ? | |
| Jul 8, 2024 | Averin | * | Elgersma | Round 6: Averin, Nikolay - Elgersma, Onno | ? | |
| Jul 6, 2024 | Elgersma | * | Alok Sinha | Round 5: Elgersma, Onno - Alok Sinha | ? | |
| Jul 6, 2024 | Zhong | * | Elgersma | Round 4: Zhong, Kangmin - Elgersma, Onno | ? | |
| Jul 5, 2024 | Elgersma | * | Sahbudak | Round 3: Elgersma, Onno - Sahbudak, Baris Cinar | ? | |
| Jul 4, 2024 | Kisic | * | Elgersma | Round 2: Kisic, Jovan - Elgersma, Onno | ? | |
| Jul 3, 2024 | Elgersma | * | Vasilkov | Round 1: Elgersma, Onno - Vasilkov, Nikolay | ? | |
| Apr 11, 2024 | Nguyen | 1–0 | Elgersma | Round 9: Nguyen, Piotr - Elgersma, Onno | Hungarian Opening: Indian Defense | |
| Apr 9, 2024 | Elgersma | ½–½ | Priansh Das | Round 6: Elgersma, Onno - Priansh Das | French Defense: Tarrasch Variation, Open System, Main Line | |
| Apr 9, 2024 | Keenan | ½–½ | Elgersma | Round 5: Keenan, Cathal - Elgersma, Onno | French Defense: King's Indian Attack | |
| Apr 7, 2024 | Vlachos | 1–0 | Elgersma | Round 3: Vlachos, Anatole - Elgersma, Onno | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Mar 31, 2024 | Elgersma | 1–0 | Karamsetty | new tournament description | French Defense: Burn Variation | |
| Mar 31, 2024 | Costa | 1–0 | Elgersma | Grenke Chess Open 2024 | French Defense: Advance Variation, Main Line | |
| Mar 30, 2024 | Collins | 0–1 | Elgersma | Grenke Open | Bogo-Indian Defense: Grünfeld Variation | |
| Dec 30, 2024 | Schoppen | ½–½ | Elgersma | Round 9: Schoppen, Casper - Elgersma, Onno | French Defense: Exchange Variation | |
| Dec 29, 2024 | Elgersma | 0–1 | Maatman | Round 8: Elgersma, Onno - Maatman, Nick | Petrov's Defense: Nimzowitsch Attack | |
| Dec 28, 2024 | Manish Anto Cristiano F | ½–½ | Elgersma | Round 7: Manish Anto Cristiano F - Elgersma, Onno | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Dec 27, 2024 | Elgersma | 1–0 | Smeets | Round 6: Elgersma, Onno - Smeets, Kobe | English Opening: Agincourt Defense | |
| Dec 26, 2024 | Narayanan S L | 1–0 | Elgersma | Round 5: Narayanan S L - Elgersma, Onno | Queen's Gambit Declined: Three Knights Variation | |
| Dec 24, 2024 | Elgersma | 1–0 | Palchuk | Round 4: Elgersma, Onno - Palchuk, Andrii | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 23, 2024 | De Winter | ½–½ | Elgersma | Round 3: De Winter, Arthur - Elgersma, Onno | Queen's Gambit Declined | |
| Dec 22, 2024 | Ten Dam | 0–1 | Elgersma | Round 2: Ten Dam, Bram - Elgersma, Onno | French Defense: Advance Variation | |
| Dec 21, 2024 | Elgersma | 1–0 | Van Helvoort | Round 1: Elgersma, Onno - Van Helvoort, Rob | Sicilian Defense: Four Knights Variation | |
| Dec 14, 2024 | Elgersma | 1–0 | Willemze | Round 5: Elgersma, Onno - Willemze, Thomas | Caro-Kann Defense: Tartakower Variation | |
| Nov 23, 2024 | Vandenbussche | 0–1 | Elgersma | Round 4: Vandenbussche, Thibaut - Elgersma, Onno | French Defense: Advance Variation, Euwe Variation | |
| Sep 14, 2024 | Elgersma | 1–0 | Schoorl | Round 2: Elgersma, Onno - Schoorl, Rob | Sicilian Defense: Hyperaccelerated Dragon | |
| Sep 14, 2024 | Elgersma | 0–1 | Smeets | Round 2: Elgersma, Onno - Smeets, Kobe | Zukertort Opening | |
| Sep 14, 2024 | Elgersma | 1–0 | Tikranian | Round 2: Elgersma, Onno - Tikranian, Alik | Zukertort Opening: Quiet System | |
| Sep 14, 2024 | Elgersma | 1–0 | Ratsma | Round 4: Elgersma, Onno - Ratsma, Midas | Ruy Lopez: Berlin Defense | |
| Sep 14, 2024 | Elgersma | 1–0 | Grooten | Round 6: Elgersma, Onno - Grooten, Tommy | Sicilian Defense: French Variation | |