| Apr 5, 2026 | Duong | 1–0 | Mons | Round 7: Duong, Quang Bach - Mons, Leon | ? | |
| Apr 5, 2026 | Mons | 1–0 | Jeitz | Round 6: Mons, Leon - Jeitz, Christian | ? | |
| Apr 3, 2026 | Nebolsina | 1–0 | Mons | Round 3: Nebolsina, Vera - Mons, Leon | ? | |
| Apr 3, 2026 | Hofmann | ½–½ | Mons | Round 1: Hofmann, Lorenz - Mons, Leon | ? | |
| Apr 3, 2026 | Mons | ½–½ | Mueller | Round 2: Mons, Leon - Mueller, Adrian | ? | |
| Dec 10, 2025 | Nisipeanu | ½–½ | Mons | Round 1: Nisipeanu, Liviu-Dieter - Mons, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Dec 2, 2025 | Postny | ½–½ | Mons | Round 5: Postny, Evgeny - Mons, Leon | Catalan Opening: Open Defense, Classical Line | |
| Dec 2, 2025 | Mons | ½–½ | Kozul | Round 4: Mons, Leon - Kozul, Zdenko | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Dec 2, 2025 | Idani | 1–0 | Mons | Round 3: Idani, Pouya - Mons, Leon | Ruy Lopez: Closed, Delayed Exchange | |
| Dec 2, 2025 | Mons | ½–½ | Harshavardhan G B | Round 2: Mons, Leon - Harshavardhan G B | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Nov 16, 2025 | Mons | 1–0 | Kueppers | Round 11: Mons, Leon - Kueppers, Timo | Bird Opening: Sturm Gambit | |
| Nov 16, 2025 | Mons | 1–0 | Schnabel | Round 9: Mons, Leon - Schnabel, Ralf | Owen Defense | |
| Nov 15, 2025 | Peyrer | 1–0 | Mons | Round 8: Peyrer, Konstantin - Mons, Leon | Bird Opening: Myers Defense | |
| Nov 15, 2025 | Mons | 1–0 | Spiess | Round 7: Mons, Leon - Spiess, Gunter | English Opening | |
| Nov 15, 2025 | Kluehs | ½–½ | Mons | Round 6: Kluehs, Gustaf - Mons, Leon | Hungarian Opening: Symmetrical Variation | |
| Nov 15, 2025 | Mons | ½–½ | Maier | Round 5: Mons, Leon - Maier, Christian | Queen's Pawn Game: Accelerated London System | |
| Nov 13, 2025 | Tabatabaei | 1–0 | Mons | Round 10: Tabatabaei, M. Amin - Mons, Leon | French Defense: Rubinstein Variation | |
| May 24, 2025 | Schlegel | ½–½ | Mons | Round 9: Schlegel, Igor - Mons, Leon | Four Knights Game: Spanish Variation, Symmetrical Variation | |
| May 24, 2025 | Mons | ½–½ | Oberhofer | Round 8: Mons, Leon - Oberhofer, Cedric | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| May 24, 2025 | Heinemann | ½–½ | Mons | Round 7: Heinemann, Josefine - Mons, Leon | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 24, 2025 | Mons | 1–0 | Boehme | Round 6: Mons, Leon - Boehme, Sebastian | English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld | |
| May 24, 2025 | Nestorovic | ½–½ | Mons | Round 5: Nestorovic, Nikola - Mons, Leon | Four Knights Game: Scotch Variation Accepted | |
| May 24, 2025 | Mons | 1–0 | Miller | Round 4: Mons, Leon - Miller, Eduard | Caro-Kann Defense: Two Knights Attack | |
| May 24, 2025 | Platzgummer | 0–1 | Mons | Round 3: Platzgummer, Fabian - Mons, Leon | King's Indian Attack: Sicilian Variation | |
| May 24, 2025 | Mons | 1–0 | Atoyan | Round 2: Mons, Leon - Atoyan, Alberto | English Opening: Agincourt Defense | |
| May 22, 2025 | Bogdanov | ½–½ | Mons | Round 1: Bogdanov, Artyom - Mons, Leon | Scandinavian Defense: Main Line | |
| Apr 6, 2025 | Horvath | 1–0 | Mons | Round 11: Horvath, Dominik - Mons, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Apr 5, 2025 | Mons | ½–½ | Costa | Round 10: Mons, Leon - Costa, Leonardo | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Apr 4, 2025 | Nguyen | 1–0 | Mons | Round 9: Nguyen, Thai Dai Van - Mons, Leon | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 3, 2025 | Dragnev | ½–½ | Mons | Round 7: Dragnev, Valentin - Mons, Leon | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Apr 2, 2025 | Mons | 0–1 | Vachier-Lagrave | Round 6: Mons, Leon - Vachier-Lagrave, Maxime | Sicilian Defense: Smith-Morra Gambit | |
| Aug 18, 2024 | Mons | ½–½ | Kekelidze | Round 9: Mons, Leon - Kekelidze, Mikheil | Catalan Opening: Open Defense | |
| Aug 17, 2024 | Baenziger | ½–½ | Mons | Round 8: Baenziger, Fabian - Mons, Leon | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Aug 16, 2024 | Mons | 1–0 | Yelisieiev | Round 7: Mons, Leon - Yelisieiev, Yevhenii | ? | |
| Aug 15, 2024 | Costa | 1–0 | Mons | Round 6: Costa, Leonardo - Mons, Leon | Ruy Lopez: Closed, Anti-Marshall | |
| Aug 15, 2024 | Mons | ½–½ | Maksimenko | Round 5: Mons, Leon - Maksimenko, Andrei | Catalan Opening: Open Defense | |
| Aug 14, 2024 | Braeuer | ½–½ | Mons | Round 4: Braeuer, Franz - Mons, Leon | Four Knights Game: Scotch Variation Accepted | |
| Aug 13, 2024 | Mons | ½–½ | Eugene | Round 3: Mons, Leon - Eugene, Floryan | Zukertort Opening: Dutch Variation | |
| Aug 13, 2024 | Buckels | ½–½ | Mons | Round 2: Buckels, Valentin - Mons, Leon | Indian Defense: London System | |
| Aug 12, 2024 | Krastev | ½–½ | Mons | Round 1: Krastev, Alexander - Mons, Leon | Ruy Lopez: Closed, Martinez Variation | |
| Nov 12, 2023 | Mons | ½–½ | Zelbel | Deutsche Schnellschach-Einzelmeisterschaft 2023 | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Nov 12, 2023 | Mons | ½–½ | Ehmann | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Zukertort Opening: Sicilian Invitation | |
| Nov 12, 2023 | Fridman | 0–1 | Mons | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Nimzo-Indian Defense: Classical Variation | |
| Nov 12, 2023 | Weber | ½–½ | Mons | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Vienna Game: Vienna Gambit, Bardeleben Variation | |
| Nov 11, 2023 | Mons | 1–0 | Muckle | Deutsche Schnellschach-Einzelmeisterschaft 2023 | English Opening: Caro-Kann Defensive System | |
| Nov 11, 2023 | Mons | 1–0 | Kuegel | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Zukertort Opening | |
| Nov 11, 2023 | Ochs | 0–1 | Mons | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Pseudo Queen's Indian Defense | |
| Nov 11, 2023 | Hess | ½–½ | Mons | Deutsche Schnellschach-Einzelmeisterschaft 2023 | English Opening: King's English Variation | |
| Apr 3, 2023 | Mons | ½–½ | Fitzsimons | Reykjavik Open 2023 | Catalan Opening: Open Defense | |
| Apr 2, 2023 | Yilmaz | 1–0 | Mons | Reykjavik Open 2023 | Queen's Gambit Declined: Three Knights Variation | |
| Apr 1, 2023 | Mons | 1–0 | Adams | Reykjavik Open 2023 | Zukertort Opening | |
| Mar 31, 2023 | Mons | ½–½ | Tari | Reykjavik Open | Indian Defense: Anti-Nimzo-Indian | |
| Mar 30, 2023 | Mons | 1–0 | Karthik | Reykjavik Open 2023 | King's Indian Attack: Spassky Variation | |
| Mar 30, 2023 | Kushko | 0–1 | Mons | Reykjavik Open 2023 | English Opening: Agincourt Defense, Catalan Defense | |
| Mar 29, 2023 | Ornolfsson | 0–1 | Mons | Reykjavik Open 2023 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Nov 7, 2021 | Mons | 1–0 | Suvorov | 24th Open Bavarian Championship | English Opening: King's English Variation, Four Knights Variation, Flexible Line | |
| Nov 6, 2021 | Hertneck | ½–½ | Mons | 24th Open Bavarian Championship | Queen's Gambit Declined: Tartakower Defense | |
| Nov 5, 2021 | Mons | ½–½ | Mastrovasilis | 24th Open Bavarian Championship | Zukertort Opening | |
| Nov 4, 2021 | Mastrovasilis | ½–½ | Mons | 24th Open Bavarian Championship | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Nov 3, 2021 | Mons | 1–0 | Seul | 24th Open Bavarian Championship | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Nov 2, 2021 | Nestorovic | ½–½ | Mons | 24th Open Bavarian Championship | Italian Game: Giuoco Pianissimo, Normal | |
| Nov 1, 2021 | Mons | 1–0 | Zude | 24th Open Bavarian Championship | King's Gambit Accepted: Schallopp Defense | |
| Oct 31, 2021 | Lohvinov | 0–1 | Mons | 24th Open Bavarian Championship | Sicilian Defense: Open | |
| Oct 30, 2021 | Mons | 1–0 | Bashylina | 24th Open Bavarian Championship | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| — | Mons | ½–½ | Stein | Deutsche Schnellschach-Einzelmeisterschaft 2023 | Zukertort Opening | |
| — | Braun | 0–1 | Mons | Reykjavik Open 2023 | Queen's Indian Accelerated | |