| Apr 27, 2026 | Dahl | 1–0 | Coste | Round 8: Dahl, Fredrik A - Coste, Thierry | Sicilian Defense: Hyperaccelerated Dragon | |
| Apr 19, 2026 | Coste | 0–1 | Kaidanov | Round 1: Coste, Thierry - Kaidanov, Gregory | Queen's Pawn Game: Colle System | |
| Nov 1, 2025 | Meyer | 1–0 | Coste | Round 11: Meyer, Gordon - Coste, Thierry | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Oct 31, 2025 | Coste | 1–0 | Van Ketel | Round 10: Coste, Thierry - Van Ketel, Raoul | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Oct 30, 2025 | Naimanov | ½–½ | Coste | Round 9: Naimanov, Rinat - Coste, Thierry | Sicilian Defense: Hyperaccelerated Dragon | |
| Oct 29, 2025 | Coste | ½–½ | Khatanbaatar | Round 8: Coste, Thierry - Khatanbaatar, Bazar | Italian Game: Classical Variation, Greco Gambit | |
| Oct 28, 2025 | Plotkin | 1–0 | Coste | Round 7: Plotkin, Victor - Coste, Thierry | Sicilian Defense: Delayed Alapin Variation | |
| Oct 26, 2025 | Coste | 1–0 | Cmiel | Round 6: Coste, Thierry - Cmiel, Thorsten | Caro-Kann Defense: Maróczy Variation, Maróczy Gambit | |
| Oct 25, 2025 | Coste | 1–0 | Karlsson | Round 5: Coste, Thierry - Karlsson, Patrik | Alekhine Defense: Exchange Variation | |
| Oct 24, 2025 | Paschall | 1–0 | Coste | Round 4: Paschall, William - Coste, Thierry | Zukertort Opening | |
| Oct 23, 2025 | Wiig | 0–1 | Coste | Round 3: Wiig, Ole Martin - Coste, Thierry | Nimzowitsch Defense: Williams Variation | |
| Oct 22, 2025 | Coste | ½–½ | Dautov | Round 2: Coste, Thierry - Dautov, Polatbek | Rubinstein Opening | |
| Oct 21, 2025 | Bosch | 1–0 | Coste | Round 1: Bosch, Jeroen - Coste, Thierry | Queen's Gambit Declined: Orthodox Defense, Bd3 Line | |
| Jul 8, 2025 | Arlt | ½–½ | Coste | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Sicilian Defense: Closed | |
| Jul 7, 2025 | Coste | ½–½ | Kirszenberg | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | King's Indian Attack | |
| Jul 6, 2025 | Namyslo | ½–½ | Coste | 10. Offene Baden-W?rttembergische Senioren-Einzelmeisterschaft | Sicilian Defense: Portsmouth Gambit | |
| Feb 24, 2025 | Coste | ½–½ | Kubikova | WSTCC | Sicilian Defense: Kan Variation, Modern Variation | |
| Feb 19, 2025 | Coste | ½–½ | Rachels | WSTCC | Sicilian Defense: Classical Variation, Sozin Attack | |
| Feb 18, 2025 | Wengholm | 0–1 | Coste | WSTCC | Catalan Opening: Open Defense, Classical Line | |
