| Dec 30, 2023 | Onno Elgersma | 0–1 | Machteld Van Foreest | Round 9: Onno Elgersma - Machteld Van Foreest | Sicilian Defense: French Variation | |
| Dec 29, 2023 | Michal Krasenkow | ½–½ | Onno Elgersma | Round 8: Michal Krasenkow - Onno Elgersma | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 28, 2023 | Onno Elgersma | 1–0 | Rob Van Helvoort | Round 7: Onno Elgersma - Rob Van Helvoort | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Dec 27, 2023 | Teimur Toktomushev | ½–½ | Onno Elgersma | Round 6: Teimur Toktomushev - Onno Elgersma | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Dec 26, 2023 | Onno Elgersma | ½–½ | Amir Nicolai | Round 5: Onno Elgersma - Amir Nicolai | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Dec 24, 2023 | Trisha Kanyamarala | ½–½ | Onno Elgersma | Round 4: Trisha Kanyamarala - Onno Elgersma | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Dec 23, 2023 | Onno Elgersma | 0–1 | Sergei Tiviakov | Round 3: Onno Elgersma - Sergei Tiviakov | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Dec 22, 2023 | Titas Stremavicius | ½–½ | Onno Elgersma | Round 2: Titas Stremavicius - Onno Elgersma | Catalan Opening: Open Defense, Classical Line | |
| Jul 23, 2023 | Sierk Kanis | 1–0 | Onno Elgersma | Round 9: Sierk Kanis - Onno Elgersma | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 21, 2023 | Onno Elgersma | ½–½ | Merijn Van Delft | Round 8: Onno Elgersma - Merijn Van Delft | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jul 21, 2023 | Jimmy Van Zutphen | 0–1 | Onno Elgersma | Round 7: Jimmy Van Zutphen - Onno Elgersma | Queen's Pawn Game: Accelerated London System | |
| Jul 20, 2023 | Nico Zwirs | 1–0 | Onno Elgersma | Round 6: Nico Zwirs - Onno Elgersma | Caro-Kann Defense: Exchange Variation | |
| Jul 19, 2023 | Onno Elgersma | 1–0 | Ed Baarslag | Round 5: Onno Elgersma - Ed Baarslag | Caro-Kann Defense: Two Knights Attack | |
| Jul 18, 2023 | Nick Manshanden | 0–1 | Onno Elgersma | Round 4: Nick Manshanden - Onno Elgersma | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 16, 2023 | Max Merbis | 1–0 | Onno Elgersma | Round 2: Max Merbis - Onno Elgersma | Queen's Gambit Declined: Tartakower Defense | |
| Jul 15, 2023 | Onno Elgersma | 1–0 | Noah Ritzerveld | Round 1: Onno Elgersma - Noah Ritzerveld | Ruy Lopez: Closed, Martinez Variation | |
| Jun 25, 2023 | Onno Elgersma | ½–½ | Jan Roebers | HSG Open 2023 A | Ruy Lopez: Closed, Martinez Variation | |
| Dec 30, 2022 | Onno Elgersma | ½–½ | Pedagandham Saketh | Round 9: Onno Elgersma - Pedagandham Saketh | Four Knights Game: Glek System | |
| Dec 29, 2022 | Arthur De Winter | 1–0 | Onno Elgersma | Round 8: Arthur De Winter - Onno Elgersma | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Dec 28, 2022 | Onno Elgersma | 1–0 | Daan Noordenbos | Round 7: Onno Elgersma - Daan Noordenbos | Indian Defense: Spielmann-Indian | |
| Dec 27, 2022 | Roger Labruyere | 0–1 | Onno Elgersma | Round 6: Roger Labruyere - Onno Elgersma | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Dec 26, 2022 | Ronit Levitan | 1–0 | Onno Elgersma | Round 5: Ronit Levitan - Onno Elgersma | Caro-Kann Defense: Exchange Variation | |
| Dec 24, 2022 | Onno Elgersma | 0–1 | Alexander Kovchan | Round 4: Midas Ratsma - Stefan Macak | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Dec 23, 2022 | Onno Elgersma | 1–0 | Cocoro Matsumura | Round 3: Onno Elgersma - Cocoro Matsumura | Sicilian Defense: Moscow Variation | |
| Dec 22, 2022 | Hagen Poetsch | 1–0 | Onno Elgersma | Round 2: Hagen Poetsch - Onno Elgersma | Caro-Kann Defense: Maróczy Variation | |
| Oct 22, 2022 | Onno Elgersma | 1–0 | William Shakhverdian | Round 9: Onno Elgersma - William Shakhverdian | Ruy Lopez: Open, Dilworth Variation | |
| Oct 21, 2022 | Jurriaan Boeren | 0–1 | Onno Elgersma | Round 8: Jurriaan Boeren - Onno Elgersma | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Oct 20, 2022 | Onno Elgersma | 0–1 | Tamer Ismail | Round 7: Onno Elgersma - Tamer Ismail | Semi-Slav Defense: Quiet Variation | |
| Oct 19, 2022 | Sona Asatryan | ½–½ | Onno Elgersma | Round 6: Sona Asatryan - Onno Elgersma | Caro-Kann Defense: Tartakower Variation | |
| Oct 19, 2022 | Onno Elgersma | ½–½ | Adrian Clemens | Round 5: Onno Elgersma - Adrian Clemens | Sicilian Defense: Moscow Variation | |
| Oct 18, 2022 | Subramaniyam H Bharath | 1–0 | Onno Elgersma | Round 4: Subramaniyam H Bharath - Onno Elgersma | Caro-Kann Defense: Two Knights Attack | |
| Oct 17, 2022 | Onno Elgersma | 1–0 | Charan Sai Kalluri Hari | Round 3: Onno Elgersma - Charan Sai Kalluri Hari | Ruy Lopez: Schliemann Defense | |
| Oct 16, 2022 | Adrian Mensing | 0–1 | Onno Elgersma | Round 2: Adrian Mensing - Onno Elgersma | Catalan Opening: Closed | |
| Oct 15, 2022 | Onno Elgersma | 1–0 | Brian Nijdam | Round 1: Onno Elgersma - Brian Nijdam | Four Knights Game: Spanish Variation, Rubinstein Variation Accepted | |
| Aug 19, 2022 | Onno Elgersma | 1–0 | Gilian Honkoop | Round 9: Onno Elgersma - Gilian Honkoop | Ruy Lopez: Closed, Martinez Variation | |
| Aug 18, 2022 | Vyacheslav Ikonnikov | ½–½ | Onno Elgersma | Round 8: Vyacheslav Ikonnikov - Onno Elgersma | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Aug 17, 2022 | Onno Elgersma | 1–0 | Jan Jaap Janse | Round 7: Onno Elgersma - Jan Jaap Janse | Caro-Kann Defense | |
| Aug 16, 2022 | Onno Elgersma | 1–0 | Koen Leenhouts | Round 6: Onno Elgersma - Koen Leenhouts | Sicilian Defense: French Variation | |
| Aug 16, 2022 | James Moreby | 1–0 | Onno Elgersma | Round 5: James Moreby - Onno Elgersma | Caro-Kann Defense: Exchange Variation | |
| Aug 15, 2022 | Onno Elgersma | 1–0 | Christian Stevens | Round 2: Onno Elgersma - Christian Stevens | Sicilian Defense: Moscow Variation, Main Line | |
| Aug 15, 2022 | Denis Luminet | 0–1 | Onno Elgersma | Round 3: Denis Luminet - Onno Elgersma | Caro-Kann Defense: Exchange Variation | |
| Aug 15, 2022 | Onno Elgersma | 1–0 | Elias Ruzhansky | Round 4: Onno Elgersma - Elias Ruzhansky | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 4, 2022 | Onno Elgersma | 0–1 | Sjoerd Van Roon | Round 9: Onno Elgersma - Sjoerd Van Roon | Queen's Pawn Game: Colle System | |
| Aug 3, 2022 | Manukonda Arun | 0–1 | Onno Elgersma | Round 8: Manukonda Arun - Onno Elgersma | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Aug 2, 2022 | Onno Elgersma | ½–½ | Peter Ypma | Round 7: Onno Elgersma - Peter Ypma | Ruy Lopez: Berlin Defense | |
| Aug 1, 2022 | Thomas Mollema | ½–½ | Onno Elgersma | Round 6: Thomas Mollema - Onno Elgersma | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Jul 30, 2022 | Onno Elgersma | 0–1 | Rick Lahaye | Round 5: Onno Elgersma - Rick Lahaye | Sicilian Defense: Moscow Variation | |
| Jul 29, 2022 | Arthur De Winter | ½–½ | Onno Elgersma | Round 4: Arthur De Winter - Onno Elgersma | Caro-Kann Defense: Two Knights Attack | |
| Jul 28, 2022 | Onno Elgersma | ½–½ | Tim Grutter | Round 3: Onno Elgersma - Tim Grutter | East Indian Defense | |
| Jul 27, 2022 | Onno Elgersma | 1–0 | Rembrandt Bruil | Round 2: Onno Elgersma - Rembrandt Bruil | ? | |
| Jul 26, 2022 | Bas De Boer | 0–1 | Onno Elgersma | Round 1: Bas De Boer - Onno Elgersma | Queen's Gambit Declined: Three Knights Variation | |
| Jun 19, 2022 | Khoi Pham | 1–0 | Onno Elgersma | Round 6: Khoi Pham - Onno Elgersma | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jun 19, 2022 | Onno Elgersma | 1–0 | Gilian Honkoop | Round 5: Onno Elgersma - Gilian Honkoop | English Opening: King's English Variation | |
| Jun 18, 2022 | Thomas Beerdsen | 1–0 | Onno Elgersma | Round 4: Thomas Beerdsen - Onno Elgersma | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jun 18, 2022 | Onno Elgersma | 1–0 | Arthur De Winter | Round 3: Onno Elgersma - Arthur De Winter | King's Indian Defense: Semi-Classical Variation | |
| Jun 17, 2022 | Roger Labruyere | * | Onno Elgersma | Round 2: Roger Labruyere - Onno Elgersma | Caro-Kann Defense: Advance Variation | |
| Jun 17, 2022 | Onno Elgersma | 1–0 | Evert-Jan Straat | Round 1: Onno Elgersma - Evert-Jan Straat | Four Knights Game: Spanish Variation, Double Spanish | |