| — | Szakolczai | 1–0 | Arnold | Grenke Open | Sicilian Defense: Closed | |
| — | Sagi | 1–0 | Arnold | Grenke Open | Rapport-Jobava System | |
| Apr 5, 2026 | Arnold | 0–1 | Kunin | Grenke Chess Festival 2026 Open | Queen's Gambit Declined: Three Knights Variation | |
| Apr 4, 2026 | De Visser | 0–1 | Arnold | Grenke Chess Festival 2026 Open | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Apr 3, 2026 | Hong | 1–0 | Arnold | Grenke Chess Festival 2026 Open | Sicilian Defense: French Variation | |
| Nov 3, 2024 | Stopa | ½–½ | Arnold | Round 9: Stopa, Jacek - Arnold, Max | Trompowsky Attack | |
| Nov 2, 2024 | Wirfs | 0–1 | Arnold | Round 8: Wirfs, Joachim - Arnold, Max | Grünfeld Defense: Exchange Variation, Classical Variation | |
| Nov 1, 2024 | Arnold | 1–0 | Tscharotschkin | Round 7: Arnold, Max - Tscharotschkin, Michael | French Defense: Tarrasch Variation, Closed Variation | |
| Oct 31, 2024 | Costa | 1–0 | Arnold | Round 6: Costa, Leonardo - Arnold, Max | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Oct 30, 2024 | Arnold | * | Gschiel | Round 5: Arnold, Max - Gschiel, Alexander | ? | |
| Oct 29, 2024 | Morawietz | 0–1 | Arnold | Round 4: Morawietz, Dieter - Arnold, Max | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Mar 31, 2024 | Arnold | ½–½ | Jeschke | Grenke Open | Sicilian Defense: Najdorf Variation | |
| Mar 30, 2024 | Arnold | 0–1 | Nevednichy | Grenke Chess Open 2024 | Philidor Defense: Lion Variation | |
| Mar 30, 2024 | Papaux | ½–½ | Arnold | Grenke Open | Grünfeld Defense: Three Knights Variation, Hungarian Variation | |
| Mar 29, 2024 | Feuerstack | ½–½ | Arnold | Grenke Chess Open 2024 | Sicilian Defense: Taimanov Variation | |
| Aug 1, 2024 | Vogel | 1–0 | Arnold | Round 1: Vogel, Constantin - Arnold, Max | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Aug 18, 2022 | Arnold | ½–½ | Cofmann | Deutschemeiterschaft offen 2022 | Petrov's Defense: Classical Attack, Staunton Variation | |
| Aug 18, 2022 | Pahl | 0–1 | Arnold | Deutschemeiterschaft offen 2022 | Ruy Lopez: Morphy Defense | |
| Aug 17, 2022 | Feuerstack | 1–0 | Arnold | Deutschemeiterschaft offen 2022 | Catalan Opening | |
| Aug 16, 2022 | Arnold | ½–½ | Gungl | Deutschemeiterschaft offen 2022 | Sicilian Defense: Najdorf Variation | |
| Aug 16, 2022 | Krassowizkij | 1–0 | Arnold | Deutschemeiterschaft offen 2022 | Queen's Gambit Declined | |
| Aug 15, 2022 | Arnold | ½–½ | Parvanyan | Deutschemeiterschaft offen 2022 | French Defense: Burn Variation | |
| Aug 14, 2022 | Becker | 0–1 | Arnold | Deutschemeiterschaft offen 2022 | Philidor Defense: Lion Variation | |
| Aug 22, 2021 | Arnold | * | Jakel | Innsbruck Festival | ? | |
| Aug 22, 2021 | Arnold | * | Jakel | Innsbruck Festival | ? | |
