| Oct 17, 2025 | Nietsch | 1–0 | Lueders Vega | Round 21: Nietsch, Felix - Lueders Vega, Iago Ernst | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Oct 17, 2025 | Schneider | 1–0 | Nietsch | Round 20: Schneider, Ilja - Nietsch, Felix | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Oct 17, 2025 | Nietsch | 1–0 | Mimkes | Round 19: Nietsch, Felix - Mimkes, Antal | Sicilian Defense: Smith-Morra Gambit | |
| Oct 17, 2025 | Dahmen | ½–½ | Nietsch | Round 18: Dahmen, Christoph - Nietsch, Felix | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 17, 2025 | Nietsch | 1–0 | Felis | Round 17: Nietsch, Felix - Felis, Timo | Caro-Kann Defense: Endgame Offer | |
| Oct 17, 2025 | Bangert | 0–1 | Nietsch | Round 16: Bangert, Jonas - Nietsch, Felix | Queen's Gambit Declined | |
| Oct 17, 2025 | Nietsch | 0–1 | Polenz | Round 15: Nietsch, Felix - Polenz, Fredrik | Pirc Defense | |
| Oct 17, 2025 | Koldunov | 0–1 | Nietsch | Round 13: Koldunov, Elena - Nietsch, Felix | Scotch Game: Göring Gambit, Main Line | |
| Oct 17, 2025 | Nietsch | 0–1 | Seyrek | Round 12: Nietsch, Felix - Seyrek, Rohat | Sicilian Defense: Smith-Morra Gambit | |
| Oct 17, 2025 | Wetterau | 0–1 | Nietsch | Round 11: Wetterau, Nathanael - Nietsch, Felix | Ponziani Opening: Jaenisch Counterattack | |
| Oct 17, 2025 | Nietsch | 0–1 | Stelmaszyk | Round 10: Nietsch, Felix - Stelmaszyk, Nico | Pirc Defense | |
| Oct 17, 2025 | Bruehl | 0–1 | Nietsch | Round 9: Bruehl, Katharina - Nietsch, Felix | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 17, 2025 | Nietsch | 1–0 | Sauer | Round 8: Nietsch, Felix - Sauer, Tim | Sicilian Defense: Smith-Morra Gambit | |
| Oct 17, 2025 | Sviridov | 0–1 | Nietsch | Round 7: Sviridov, Vitaliy - Nietsch, Felix | Queen's Pawn Game | |
| Oct 17, 2025 | Nietsch | 1–0 | Engel | Round 6: Nietsch, Felix - Engel, Bruno | Sicilian Defense: Smith-Morra Gambit | |
| Oct 17, 2025 | Ponyrko | 0–1 | Nietsch | Round 5: Ponyrko, Matviy - Nietsch, Felix | Queen's Pawn Game: Colle System | |
| Oct 17, 2025 | Nietsch | 0–1 | Nguyen | Round 2: Nietsch, Felix - Nguyen, Phuc Nhat | Nimzowitsch Defense: Declined Variation | |
| Oct 17, 2025 | Ziems | ½–½ | Nietsch | Round 3: Ziems, Michael - Nietsch, Felix | Queen's Gambit Declined: Tartakower Defense | |
| Oct 17, 2025 | Nietsch | 0–1 | Ay | Round 4: Nietsch, Felix - Ay, Furkan | Sicilian Defense: Smith-Morra Gambit | |
| Oct 17, 2025 | Sauer | 0–1 | Nietsch | Round 1: Sauer, Ben - Nietsch, Felix | Hungarian Opening: Slav Formation | |
| Oct 13, 2025 | Langer | 0–1 | Nietsch | Round 14: Langer, Michael S. - Nietsch, Felix | Zukertort Opening | |
