| Apr 29, 2026 | Koorevaar | 0–1 | Vermeulen | Round 6: Koorevaar, Sarah-Joy - Vermeulen, Ilona | Indian Defense: Czech-Indian | |
| Apr 29, 2026 | Vermeulen | 1–0 | Schipper | Round 5: Vermeulen, Ilona - Schipper, Sarah | Queen's Gambit Declined | |
| Apr 26, 2026 | Jorritsma | 1–0 | Vermeulen | Round 3: Jorritsma, Eli Alia - Vermeulen, Ilona | Catalan Opening: Closed | |
| Apr 25, 2026 | Vermeulen | ½–½ | Hardeman | Round 2: Vermeulen, Ilona - Hardeman, Imara | Slav Defense: Chebanenko Variation | |
| Apr 25, 2026 | Omnes | 0–1 | Vermeulen | Round 1: Omnes, Zoe - Vermeulen, Ilona | Caro-Kann Defense: Exchange Variation | |
| Apr 12, 2026 | Greven | 0–1 | Vermeulen | Round 4: Greven, Noa - Vermeulen, Ilona | Caro-Kann Defense: Exchange Variation | |
| May 2, 2025 | Westerhof | 1–0 | Vermeulen | Round 6: Westerhof, Fleur - Vermeulen, Ilona | Scandinavian Defense: Marshall Variation | |
| May 1, 2025 | Vermeulen | 0–1 | Hagen | Round 5: Vermeulen, Ilona - Hagen, Carlijn | Queen's Gambit Accepted: Central Variation, Greco Variation | |
| Apr 30, 2025 | Vermeulen | 0–1 | Koorevaar | Round 4: Vermeulen, Ilona - Koorevaar, Sarah-Joy | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 28, 2025 | Hagen | 1–0 | Vermeulen | Round 3: Hagen, Carlijn - Vermeulen, Ilona | Bird Opening: From's Gambit | |
| Apr 27, 2025 | Vermeulen | 0–1 | Westerhof | Round 2: Vermeulen, Ilona - Westerhof, Fleur | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 26, 2025 | Koorevaar | 1–0 | Vermeulen | Round 1: Koorevaar, Sarah-Joy - Vermeulen, Ilona | Bogo-Indian Defense: Exchange Variation | |
| May 3, 2024 | Jermin | 0–1 | Vermeulen | Round 7: Jermin, Ayleanna - Vermeulen, Ilona | Scandinavian Defense: Modern Variation | |
| May 2, 2024 | Vermeulen | 0–1 | Luong | Round 6: Vermeulen, Ilona - Luong, Thao | Semi-Slav Defense: Semi-Meran Variation | |
| May 1, 2024 | Zhang | 0–1 | Vermeulen | Round 5: Zhang, Jinchen - Vermeulen, Ilona | Queen's Gambit Declined: Modern Variation, Normal Line | |
| Apr 30, 2024 | Vermeulen | 0–1 | Hardeman | Round 4: Vermeulen, Ilona - Hardeman, Imara | Scandinavian Defense: Gubinsky-Melts Defense | |
| Apr 29, 2024 | Regterschot | 0–1 | Vermeulen | Round 3: Regterschot, Frederieke - Vermeulen, Ilona | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Apr 28, 2024 | Vermeulen | ½–½ | Schipper | Round 2: Vermeulen, Ilona - Schipper, Sarah | Scotch Game: Lolli Variation | |
