| Dec 30, 2025 | Haertel | ½–½ | Popkiewicz | DVM U16 2025 | Benko Gambit | |
| Dec 29, 2025 | Klotzbuecher | 0–1 | Haertel | DVM U16 2025 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Dec 28, 2025 | Haertel | 0–1 | Schaudienst | DVM U16 2025 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation | |
| Dec 28, 2025 | Sai Ritvik Arvapalli | 1–0 | Haertel | DVM U16 2025 | English Opening: Agincourt Defense | |
| Dec 27, 2025 | Haertel | 1–0 | Svanidze | DVM U16 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 27, 2025 | Huang | 0–1 | Haertel | DVM U16 2025 | Sicilian Defense: Accelerated Dragon | |
| Nov 1, 2025 | Haertel | 1–0 | Stroobant | Runde 7: Haertel, Leon - Stroobant, Arne | Benoni Defense: Classical Variation, New York Variation | |
| Nov 1, 2025 | Direk | 1–0 | Haertel | Runde 6: Direk, Oguzhan - Haertel, Leon | Rapport-Jobava System | |
| Nov 1, 2025 | Haertel | ½–½ | Neumann | Runde 5: Haertel, Leon - Neumann, Michael | King's Indian Defense: Fianchetto Variation, Kavalek Defense | |
| Oct 31, 2025 | Roth | ½–½ | Haertel | Runde 4: Roth, Thorsten - Haertel, Leon | Catalan Opening: Open Defense, Classical Line | |
| Oct 31, 2025 | Haertel | 1–0 | Wernke-Schmiesing | Runde 3: Haertel, Leon - Wernke-Schmiesing, Sebastian | Semi-Slav Defense: Meran Variation | |
| Oct 30, 2025 | Schnelting | 1–0 | Haertel | Runde 2: Schnelting, Michael - Haertel, Leon | King's Indian Attack | |
| Oct 30, 2025 | Haertel | 0–1 | Gremmel | Runde 1: Haertel, Leon - Gremmel, Jonas Simon | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 30, 2024 | Li | 1–0 | Haertel | DVM U14 2024 | Torre Attack: Classical Defense | |
| Dec 29, 2024 | Haertel | 1–0 | Kalinski | DVM U14 2024 | Benko Gambit | |
| Dec 29, 2024 | Rodriguez Klasen | ½–½ | Haertel | DVM U14 2024 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Dec 28, 2024 | Haertel | ½–½ | Kaplan | DVM U14 2024 | Nimzo-Indian Defense: St. Petersburg Variation | |
| Dec 28, 2024 | Noennig | 1–0 | Haertel | DVM U14 2024 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Dec 27, 2024 | Haertel | ½–½ | Ollhoff | DVM U14 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 27, 2024 | Kommessin | 0–1 | Haertel | DVM U14 2024 | Sicilian Defense: Smith-Morra Gambit Accepted, Paulsen Formation | |
| Nov 3, 2024 | Haertel | 0–1 | Freitag | Round 7: Haertel, Leon - Freitag, Christian | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 2, 2024 | Haertel | 1–0 | Thomas | Round 5: Haertel, Leon - Thomas, Jeremy | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Nov 2, 2024 | Hintze | 1–0 | Haertel | Round 6: Hintze, Helge - Haertel, Leon | English Opening: Symmetrical Variation, Full Symmetry Line | |
| Nov 1, 2024 | Haertel | 1–0 | Wiethuechter | Round 3: Haertel, Leon - Wiethuechter, Samuel | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 1, 2024 | Mueller-Ludwig | ½–½ | Haertel | Round 4: Mueller-Ludwig, Kristin - Haertel, Leon | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Oct 31, 2024 | Haertel | 0–1 | Capelja | Round 1: Haertel, Leon - Capelja, Christian | Nimzo-Indian Defense: Normal Variation | |
| Oct 31, 2024 | Bauer | 1–0 | Haertel | Round 2: Bauer, Timon - Haertel, Leon | Sicilian Defense: Old Sicilian | |
| — | Haertel | ½–½ | Heinzel | Round 5: Haertel, Leon - Heinzel, Thomas | Tarrasch Defense: Two Knights Variation | |
| — | Haertel | 0–1 | Bohle | Round 7: Haertel, Leon - Bohle, Jasper | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| — | Nahornyi | 1–0 | Haertel | Round 3: Nahornyi, Ihor - Haertel, Leon | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| — | Echargui | ½–½ | Haertel | Round 6: Echargui, Amin - Haertel, Leon | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
