| Dec 30, 2025 | Kirchner | 1–0 | Cox | Round 7: Kirchner, Emil - Cox, Jonas | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Dec 30, 2025 | Cox | ½–½ | Kammann | Round 6: Cox, Jonas - Kammann, Thomas | English Opening: Symmetrical Variation, Normal Variation | |
| Dec 29, 2025 | Zander | 1–0 | Cox | Round 5: Zander, Vincent - Cox, Jonas | Queen's Gambit Accepted: Janowski-Larsen Variation | |
| Dec 29, 2025 | Cox | 0–1 | Pfaar | Round 4: Cox, Jonas - Pfaar, Zeno | English Opening | |
| Dec 28, 2025 | Hepting | * | Cox | Round 3: Hepting, Frank - Cox, Jonas | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Dec 28, 2025 | Cox | 1–0 | Beyens | Round 2: Cox, Jonas - Beyens, Lander | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Dec 27, 2025 | Katz | ½–½ | Cox | Round 1: Katz, Rafael - Cox, Jonas | Queen's Pawn Game: Chigorin Variation, Alburt Defense | |
| Jun 9, 2025 | Cox | * | Oezdemir | Round 7: Cox, Jonas - Oezdemir, Anna Valentina | ? | |
| Jun 9, 2025 | Fedorenko | 1–0 | Cox | Round 6: Fedorenko, Tatyana - Cox, Jonas | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Jun 8, 2025 | Cox | * | Schumann | Round 5: Cox, Jonas - Schumann, Lasse | ? | |
| Jun 8, 2025 | Rummelshaus | 1–0 | Cox | Round 4: Rummelshaus, Heinz - Cox, Jonas | Saragossa Opening | |
| Jun 7, 2025 | Cox | * | Schuller | Round 3: Cox, Jonas - Schuller, Bernd | English Opening: Agincourt Defense | |
| Jun 7, 2025 | Zhuravlev | * | Cox | Round 2: Zhuravlev, Ivan - Cox, Jonas | ? | |
| Jun 6, 2025 | Cox | 0–1 | Wilde | Round 1: Cox, Jonas - Wilde, Justin | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
