| Dec 30, 2025 | Pogorelow | 0–1 | Arnz | Round 7: Pogorelow, Benjamin - Arnz, Tom Niklas | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Dec 30, 2025 | Arnz | 0–1 | Jonas Markgraf | Round 6: Arnz, Tom Niklas - Jonas Markgraf | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Dec 29, 2025 | Tu | 0–1 | Arnz | Round 5: Tu, John-Nino - Arnz, Tom Niklas | Yusupov-Rubinstein System | |
| Dec 29, 2025 | Arnz | ½–½ | Komans | Round 4: Arnz, Tom Niklas - Komans, Dieter | Scotch Game | |
| Dec 28, 2025 | Katz | ½–½ | Arnz | Round 3: Katz, Rafael - Arnz, Tom Niklas | Horwitz Defense | |
| Dec 28, 2025 | Arnz | ½–½ | Ivan Riabtsev | Round 2: Arnz, Tom Niklas - Ivan Riabtsev | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
| Dec 27, 2025 | Theiner | 0–1 | Arnz | Round 1: Theiner, Mattis - Arnz, Tom Niklas | French Defense: Winawer Variation, Positional Variation | |
| Nov 3, 2024 | Hansch | ½–½ | Arnz | Round 7: Hansch, Torsten - Arnz, Tom Niklas | Queen's Indian Defense: Riumin Variation | |
| Nov 2, 2024 | Arnz | 0–1 | Schumann | Round 6: Arnz, Tom Niklas - Schumann, Steffen | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
| Nov 2, 2024 | Kummerow | 1–0 | Arnz | Round 5: Kummerow, Heiko - Arnz, Tom Niklas | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | |
| Nov 1, 2024 | Arnz | 1–0 | Tymura | Round 4: Arnz, Tom Niklas - Tymura, Achim | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Nov 1, 2024 | Freitag | 0–1 | Arnz | Round 3: Freitag, Christian - Arnz, Tom Niklas | French Defense: Schlechter Variation | |
| Oct 31, 2024 | Arnz | 0–1 | Popvasilev | Round 2: Arnz, Tom Niklas - Popvasilev, Kaloyan | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Oct 31, 2024 | zur Bruegge | ½–½ | Arnz | Round 1: zur Bruegge, Carsten - Arnz, Tom Niklas | French Defense: Burn Variation | |
| Aug 17, 2024 | Omar | 0–1 | Arnz | Round 7: Omar, Mawloud - Arnz, Tom Niklas | French Defense: King's Indian Attack | |
| Aug 16, 2024 | Arnz | 1–0 | Verlaine | Round 6: Arnz, Tom Niklas - Verlaine, Alexandre | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
