| Jun 10, 2026 | Thirion | ½–½ | Gormally | Round 9: Thirion, Marcel - Gormally, Daniel W | King's Indian Attack: Symmetrical Defense | |
| Jun 8, 2026 | Thirion | 1–0 | Dishman | Round 7: Thirion, Marcel - Dishman, Stephen | King's Indian Attack: Double Fianchetto | |
| Jun 7, 2026 | Thorhallsson | ½–½ | Thirion | Round 6: Thorhallsson, Throstur - Thirion, Marcel | Sicilian Defense: Velimirovic Attack | |
| Jun 6, 2026 | Thirion | 1–0 | Wallner | Round 5: Thirion, Marcel - Wallner, Joachim | Slav Defense: Exchange Variation | |
| Jun 5, 2026 | Thirion | 1–0 | Zeller | Round 4: Thirion, Marcel - Zeller, Frank | English Opening: Symmetrical Variation, Botvinnik System | |
| Jun 4, 2026 | Novak | 0–1 | Thirion | Round 3: Novak, Vjekoslav - Thirion, Marcel | Bird Opening | |
| Jun 3, 2026 | Thirion | 0–1 | Mrva | Round 2: Thirion, Marcel - Mrva, Martin | Zukertort Opening | |
| Jun 2, 2026 | Caputo | 0–1 | Thirion | Round 1: Caputo, Andrea - Thirion, Marcel | Sicilian Defense: Classical Variation | |
| Jun 1, 2026 | Degraeve | ½–½ | Thirion | Round 8: Degraeve, Jean-Marc - Thirion, Marcel | Sicilian Defense: Moscow Variation, Haag Gambit | |
| Oct 19, 2025 | Hofman | ½–½ | Thirion | Round 1: Hofman, Marnix - Thirion, Marcel | Nimzo-Indian Defense: Rubinstein System, Hübner Variation | |
| Oct 25, 2024 | Thirion | 1–0 | Nolan | 39th European Chess Club Cup | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| Oct 23, 2024 | Thirion | 0–1 | Van Houwelingen | 39th European Chess Club Cup | Zukertort Opening: Kingside Fianchetto | |
| Oct 22, 2024 | Mihasi | ½–½ | Thirion | 39th European Chess Club Cup | Pseudo Queen's Indian Defense | |
| Oct 21, 2024 | Dechamps | 1–0 | Thirion | 39th European Chess Club Cup | Sicilian Defense: Closed, Traditional | |
| Oct 20, 2024 | Thirion | ½–½ | Huzman | Round 1: Thirion, Marcel - Huzman, Alexander | King's Indian Attack | |
