| May 2, 2026 | Jong | 1–0 | Seyns | Round 5: Jong, Casijn - Seyns, Odilon | English Opening: Anglo-Dutch Defense | |
| May 2, 2026 | Seyns | ½–½ | Grochal | Round 1: Seyns, Odilon - Grochal, Joey | Sicilian Defense: Closed, Botvinnik Defense, with Nge2 | |
| Jul 8, 2025 | Seyns | 0–1 | Shen | Round 4: Seyns, Odilon - Shen, Tingrui | Sicilian Defense: Closed, Botvinnik Defense, Edge Variation | |
| Jul 6, 2025 | Seyns | 0–1 | Karlovic | Round 2: Seyns, Odilon - Karlovic, Luka | Petrov's Defense: Modern Attack, Center Attack | |
| Jul 5, 2025 | Hegedus | 1–0 | Seyns | Round 1: Hegedus, Bernat - Seyns, Odilon | Nimzo-Indian Defense: St. Petersburg Variation | |
| Apr 1, 2024 | Vanhee | 1–0 | Seyns | Round 7: Vanhee, Freddy - Seyns, Odilon | Queen's Pawn Game | |
| Mar 30, 2024 | Seyns | 0–1 | Bauwens | Round 1: Seyns, Odilon - Bauwens, Steven | French Defense: Normal Variation | |
| Aug 7, 2023 | Seyns | ½–½ | Escobar Garcia | WSTC | Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation | |
| Aug 6, 2023 | Ahmed | 0–1 | Seyns | WSTC | English Opening: Carls-Bremen System | |
| Aug 4, 2023 | Shorakhmatov | 0–1 | Seyns | WSTC | Four Knights Game: Italian Variation | |
| — | Seyns | 0–1 | Baltayev | WSTC | French Defense: Exchange Variation | |
| — | Seyns | 1–0 | Mohamed | WSTC | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| — | Seyns | 0–1 | Gang | WSTC | Italian Game: Two Knights Defense, Colman Variation | |
| — | Seyns | 1–0 | Van Loock | Round 1: Seyns, Odilon - Van Loock, Louis | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Seyns | 1–0 | Algera | Round 3: Seyns, Odilon - Algera, Rune | Italian Game: Classical Variation, Giuoco Pianissimo | |
| — | Seyns | 1–0 | Lach | Round 5: Seyns, Odilon - Lach, Delhi | Sicilian Defense: Löwenthal Variation | |
| — | Seyns | 0–1 | Li | Round 7: Seyns, Odilon - Li, Hansi | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| — | Szmolke | 1–0 | Seyns | WSTC | Scotch Game: Scotch Gambit | |
| — | Zinkov | 0–1 | Seyns | WSTC | Italian Game: Rosentreter Gambit | |
| — | Van De Westelaken | 0–1 | Seyns | Round 2: Van De Westelaken, Stefan - Seyns, Odilon | Italian Game: Giuoco Pianissimo, Canal Variation | |
| — | Toledo | 1–0 | Seyns | Round 4: Toledo, Hillel - Seyns, Odilon | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| — | Morard | 0–1 | Seyns | Round 6: Morard, Basile - Seyns, Odilon | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| — | Shchetinin | 0–1 | Seyns | Round 8: Shchetinin, Mykyta - Seyns, Odilon | Italian Game: Classical Variation, Greco Gambit, Anderssen Variation | |
| — | Declerck | 0–1 | Seyns | Round 9: Declerck, Darrin - Seyns, Odilon | Italian Game: Scotch Gambit, Max Lange Attack | |
| — | Zouaghi | 1–0 | Seyns | Open Geraardsbergen 2025 | Italian Game: Scotch Gambit, Max Lange Attack | |
