| May 25, 2026 | Mijnster | 0–1 | Eckardt | Round 6: Mijnster, Niels - Eckardt, Joshua | Bird Opening: Horsefly Defense | |
| May 24, 2026 | Eckardt | ½–½ | Aishwin Daniel | Round 5: Eckardt, Joshua - Aishwin Daniel | Dutch Defense: Classical Variation, Huisl Variation | |
| May 24, 2026 | Battistelli | ½–½ | Eckardt | Round 4: Battistelli, Fausto - Eckardt, Joshua | French Defense: Tarrasch Variation, Chistyakov Defense | |
| May 23, 2026 | Eckardt | * | Mueer | Round 3: Eckardt, Joshua - Mueer, Sebastian | ? | |
| May 23, 2026 | Manucharyan | * | Eckardt | Round 2: Manucharyan, Andriy - Eckardt, Joshua | ? | |
| Dec 20, 2025 | Weidenhoefer | 1–0 | Eckardt | Round 4: Weidenhoefer, Max - Eckardt, Joshua | French Defense: Advance Variation, Euwe Variation | |
| Dec 20, 2025 | Eckardt | 1–0 | Parvanyan | Round 3: Eckardt, Joshua - Parvanyan, Alfred | Grünfeld Defense: Russian Variation | |
| Dec 19, 2025 | Lichtmannecker | ½–½ | Eckardt | Round 2: Lichtmannecker, Daniel - Eckardt, Joshua | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Jul 30, 2025 | Van Roon | 1–0 | Eckardt | Round 9: Van Roon, Sjoerd - Eckardt, Joshua | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Jul 29, 2025 | Labruyere | 0–1 | Eckardt | Round 8: Labruyere, Roger - Eckardt, Joshua | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Jul 28, 2025 | Eckardt | 0–1 | Reuter | Round 7: Eckardt, Joshua - Reuter, Julian-Frank | Queen's Gambit Declined: Three Knights Variation | |
| Jul 27, 2025 | Vos | 0–1 | Eckardt | Round 6: Vos, Tjark - Eckardt, Joshua | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jul 26, 2025 | Eckardt | 1–0 | Evengroen | Round 5: Eckardt, Joshua - Evengroen, Jan | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Jul 25, 2025 | Bus | 0–1 | Eckardt | Round 4: Bus, Tom - Eckardt, Joshua | Catalan Opening: Closed | |
| Jul 24, 2025 | Eckardt | 1–0 | Trunz | Round 3: Eckardt, Joshua - Trunz, Michelle | Queen's Indian Defense: Fianchetto Variation | |
| Jul 23, 2025 | Elgersma | 1–0 | Eckardt | Round 2: Elgersma, Onno - Eckardt, Joshua | French Defense: Classical Variation, Shirov-Anand Variation | |
| Jul 22, 2025 | Eckardt | 0–1 | Van den Berg | Round 1: Eckardt, Joshua - Van den Berg, Jeroen | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| Jun 9, 2025 | Beerdsen | 1–0 | Eckardt | Round 7: Beerdsen, Thomas - Eckardt, Joshua | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Jun 8, 2025 | Verheul | ½–½ | Eckardt | Round 5: Verheul, Job - Eckardt, Joshua | French Defense: Tarrasch Variation, Chistyakov Defense | |
